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Topic: Regenerative circuit

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	Regenerative Receivers (Site not responding. Last check: )
		Regenerative one-tube receivers are shown in Figs 3 and 4 The antenna circuit is loosely coupled in both of these types, the single circuit arrangement being a too powerful radiator to allow its use with regeneration.
		Coil B is in the plate circuit and coil A is in the grid circuit.
		It is possible to feed energy from the plate circuit back to the grid circuit and reinforce the voltages in the grid circuit because the frequency in the plate circuit is exactly the same as the frequency in the grid circuit.
	www.connix.com /~harry/regenrx.htm (7846 words)

	Regenerative vacuum valve amplifier
		Resonance of the plate circuit is secured by the variable inductance L3 which at the lower oscillation frequencies is shunted by condenser C-3 (of approximately.001 microfarad capacity).
		The plate circuit is tuned by inductance P and condenser C-3, which are proportioned for resonance with the incoming signal.
		The circuit, in brief, functions as follows: As the incoming oscillations are rectified and trapped in the grid condenser C, the plate current is gradually reduced (due to the increasing negative potential of the grid), and at the termination of the wave train, it returns to normal value.
	hjem.get2net.dk /helthansen/regenerative_vacuum_valve.htm (1078 words)

	ipedia.com: Regenerative circuit Article (Site not responding. Last check: )
		The regenerative circuit (or self-regenerative circuit) allows a signal to be amplified many times by the same tube, and improved selectivity as well.
		Regenerative circuits were a great milestone in radio history.
		The inventor of FM radio, Edwin Armstrong, patents a method of regenerative circuits (invented while he was a junior in college, and patented 1914), the Super-regenerative circuit (patented 1922), and the Super Heterodyne receiver (patented 1918).
	www.ipedia.com /regenerative_circuit.html (422 words)

	Regenerative Medicine -- Recommendations and Resources (Site not responding. Last check: )
		The inventor of FM radio, Edwin Armstrong, patented the regenerative circuit (invented while he was a junior in college, and patented 1914), the Super-regenerative circuit (patented 1922), and the Super Heterodyne receiver (patented 1918).
		The district was established in 1972 by merging the former districts of Regen and Viechtach.
		Regenerative braking energy recovery is insignificant on the highway, little when the battery are near fully charge, limited to soft breaking (heavy breaking exceeding recovery power capability), and none for now from the back wheels (still waste energy to standard friction brakes) http://www.hybridcars.com/renerative-braking.html.
	www.becomingapediatrician.com /health/125/regenerative-medicine.html (1206 words)

	Regenerative Receiver and Amplifier
		A regenerative circuit is often this type of an AM detector but it uses a positive feedback which greatly increases both the selectivity and sensitivity of a simple receiver.
		It is the function of this circuit to heat the filament, just as in an ordinary incandescent lamp, to the proper temperature when electrons are given off by the filament.
		The tuning circuit is of the well known single circuit type consisting of a variable inductance (A) in series with a fixed condenser (B), the latter, having two values of capacity which are available through two antenna binding posts.
	www.radiomuseum.org /forum/regenerative_receiver_and_amplifier.html (4268 words)

	Switching circuit - Patent 4614897
		The switching circuit of claim 4 further including a pulse transformer having a primary winding coupled to a signal source and a secondary winding having first and second ends coupled to the control and first electrodes of the first transistor respectively for providing input signals to the input terminal of the first latch.
		The ballast circuit of claim 10 further including a pulse transformer having a primary winding coupled to a signal source and a secondary winding having first and second ends coupled to the control and first electrodes of the first transistor respectively for providing input signals to the input terminal of the first latch.
		The circuit in the FIGURE is a fluorescent lamp ballast and dimmer circuit that uses a direct current to alternating current inverter incorporating an electronic switch in accordance with the present invention.
	www.freepatentsonline.com /4614897.html (4655 words)

	Regenerative circuit - Wikipedia, the free encyclopedia
		The regenerative circuit (or self-regenerative circuit) allows an electronic signal to be amplified many times by the same vacuum tube or other active component such as a field effect transistor.
		Regenerative circuits were employed in early radio receivers, offering selectivity and sensitivity far beyond that available from a crystal radio receiver.
		The inventor of FM radio, Edwin Armstrong, patented the regenerative circuit (invented while he was a junior in college, and patented 1914), the Super-regenerative circuit (patented 1922), and the Superheterodyne receiver (patented 1918).
	en.wikipedia.org /wiki/Regenerative_circuit (676 words)

	EP700158 St european software patent - Protection circuit against current overloads for electronic power devices - Gauss
		The protection circuit 1 comprises a threshold comparator C including a pair of bipolar input transistors Q1 and Q2 which in the figure illustrated are the pnp type.
		In the protection circuit 1 is also included a feedback network R for the threshold comparator C. This feedback network R comprises at least one third transistor Q3, which in the figure illustrated is the npn type, appropriately connected so that the aforesaid network has loop gain greater than 1.
		Protection circuit in accordance with claims 1, 2, 3 and 4 characterised in that the switch (SW1) is an MOS transistor.
	gauss.ffii.org /PatentView/EP700158 (1752 words)

	Regenerative detector
		The circuit can be made to oscillate by increasing the amount of energy fed back to the tank circuit from the collector-output circuit (by physically moving tickler coil L2 closer to L1 using the regeneration control).
		The circuit consists of an antenna, a tuned LC tank circuit, a semiconductor diode detector, and a headset which is bypassed by capacitor C2.
		Voltages in the circuit cause an output voltage to develop across the load impedance that is proportional to the input voltage peaks of the modulation envelope.
	www.tpub.com /neets/book12/51a.htm (897 words)

	Antique Radio Classified: Reinartz Home Brews
		The process usually required retuning the plate circuit or the detector tube each time the grid circuit was tuned to a new signal.
		The Reinartz circuit, as shown in Figure 1, featured a combination of capacitive and inductive feedback using a specially wound spiderweb coil with tapped primary, secondary, and tickler windings.
		Regenerative feedback was effected by a variable capacitor in the detector plate-tickler-antenna circuit.
	www.antiqueradio.com /reinartz_01-99.html (1767 words)

	Regenerative Braking
		The circuit works very well and I used to use the bike most days, the reason I made the regen braking is that where I previously lived (near the base of Mt Wellington in Hobart) there are long steep hills.
		circuit, they are just the basics there are quite a few bits and pieces have to be added to get the regen.
		circuit, the current is just going through the motor windings and the energy is lost as heat and also as the current flow is opposing the direction of magnet rotation or rotation of the wheel, which also helps slow you down.
	www.users.bigpond.com /solarbbq/regen/regen.htm (2188 words)

	AA5TB's Regenerative Receiver
		Regenerative receivers have a long history in radio dating back to the first days of the vacuum tube.
		The original schematic I had posted was of my actual circuit based upon parts I had on hand and this revised schematic is the same circuit with more details and with a few component changes to values that are more readily available.
		The circuit card is securely fastened to a 1/2 inch thick piece of oak using small, brass wood screws.
	www.aa5tb.com /regen.html (1002 words)

	A PORTABLE REGENERATIVE RECEIVER
		For them, the tuning procedure with the regenerative control is part of the fun of operating this primitive radio.
		Due to the regenerative feedback principle, the gain of the total circuit varies considerably more than that of the BF494 transistor alone.
		Operating a regenerative receiver is much more interesting if you know someting about the working principle of the regenerative process.
	www.geocities.com /pa2ohh/02reg.htm (1894 words)

	Regeneration Revisited -- The Tesla Connection
		In this configuration, conceived of by Edwin H. Armstrong in 1912, a portion of the signal from the plate circuit was coupled as positive feedback to the tuned antenna tank circuit.
		On August 3 of that year he recorded a number of receiver circuit arrangements in which RF currents were fed back from the secondary side of a resonant transformer to a coherer located on the transformer's primary side.
		The basic regenerative circuit is not often used in present day receiver front ends for a number of reasons, the most significant of these being an inherent form of instability.
	www.tfcbooks.com /articles/tws5.htm (1113 words)

	[No title]
		Placing a winding in the plate circuit which is magnetically coupled to a coil which is in the grid circuit causes signal from the output to be fed back to the input.
		Because the coil in the grid circuit is tuned to a specific frequency by the capacitor the feedback is at that one frequency.
		The 100 k ohm pot in the screen grid circuit is the regeneration control.
	www.angelfire.com /electronic/funwithtubes/Regen_det.html (1113 words)

	Withdrawl of Edwin H. Armstrong House: National Historic Landmarks Program (NHL)
		During the summer of 1912, he created a new regenerative circuit and tested this device in the turret room of the Yonkers house.
		Armstrong's regenerative circuit was the first radio amplifier and it became the basis of the continuous-wave transmitter that remains key to radio broadcasting.
		After a legal battle to control his patent for the Regenerative Circuit that lasted from 1922 to 1934, Armstrong eventually lost the case in the US Supreme Court, but he continued to be recognized by the scientific community as the inventor of this circuit.
	www.cr.nps.gov /nhl/DOE_dedesignations/Armstrong.htm (630 words)

	FM only: Low Tech FM Radios
		If you apply a FM signal to a good tuned circuit, as the frequency of the FM signal moves away from the resonant frequency of the tuned circuit, the tuned circuit will attenuate that signal.
		Moreover, the antenna coupling circuit and antenna are both tuned to the frequency of oscillation.
		With this circuit, the input is tuned to the FM station.
	www.somerset.net /arm/fm_only_lowtech.html (1922 words)

	Entertainment - Text
		Radio's premier inventor, Edwin H. Armstrong was responsible for the Regenerative Circuit (1912), the Superheterodyne Circuit (1918), the Superregenerative Circuit (1922) and the complete FM System (1933).
		In the summer of 1912 Armstrong devised a new regenerative circuit in which part of the current at the plate was fed back to the grid to strengthen incoming signals.
		Thus this single circuit yielded not only the first radio amplifier but also the key to the continuous-wave transmitter that is still at the heart of all radio operations.
	web.njit.edu /~aaj6/armstrong.html (709 words)

	RCA Radiola Model III Radio (1924)
		This is a single circuit connection which on an average antenna will cover the approximate wavelength range of 200-360 meters corresponding to a frequency range of 830-1500 kilocycles (kilohertz).
		This is a single circuit connection which on an average antenna will cover the approximate wavelength range of 250-480 meters corresponding to a frequency range of 625-1200 kilocycles.
		This is a closed single circuit which on a very small antenna, such as an indoor one, will cover the approximate wavelength range of 290-575 meters corresponding to a frequency range of 520-1070 kilocycles.
	antiqueradio.org /radiola3.htm (1948 words)

	Regeneration - Wikipedia, the free encyclopedia
		A regenerative brake is an apparatus or system which allows a vehicle to recapture and store part of the kinetic energy that would otherwise be 'lost' to heat when braking.
		In electronics, the term means a regenerative circuit (or self-regenerative circuit) allowing a signal to be amplified many times.
		In a regenerative repeater, the process by which digital signals are amplified, reshaped, retimed, and retransmitted.
	en.wikipedia.org /wiki/Regeneration (482 words)

	A Regenerative Receiver for 40 Meters
		I wanted, not simply a Regen knob, but also a switch position called "CW/SSB" which would force the detector into its oscillating mode regardless of where the Regen knob was set when I was listening to Amplitude Modulated Shortwave stations such as the BBC, in the non-oscillating mode.
		So the superhet user hears just the station he or she has tuned to, while the Regen or DC receiver user hears the desired station, plus an annoying chirping gibberish voice, if a station happens to be transmitting at that spot on the dial.
		I noticed that the apparent strengths of the signals in the 40 meter band are relatively weak during the day; adding this bypass cap increases the RF gain (and sensitivity) noticeably.
	www.tricountyi.net /~randerse/regen.htm (1917 words)

	Regenerative circuit - Education - Information - Educational Resources - Encyclopedia - Music
		Lee De Forest filed a patent in 1916 that became the cause of a contentious lawsuit with the prolific inventor Armstrong, whose patent for the regenerative circuit had been issued in 1914.
		The secret to the regenerative radio was carefully controlled positive feedback.
		The regenerative receiver is theoretically as sensitive as any radio can be, however, the adjustments are critical, and must be continuously monitored during listening.
	www.music.us /education/R/Regenerative-circuit.htm (572 words)

	Regenerative circuits
		This circuit provides a costly means to accomplish the same end as Circuit 2.
		Whether or not this circuit is appropriate for a given application depends on working force requirements.
		In the circuit shown, energizing solenoids a and b extends the cylinder in a differential circuit.
	www.hydraulicspneumatics.com /200/TechZone/HydraulicValves/Article/True/6475/TechZone-HydraulicValves (316 words)

	SMALL PORTABLE REGENERATIVE RECEIVER
		Circuit diagram of the small simplified ultra portable version of the regenerative receiver
		Part of the RF output level is fed back to the input by the regenerative control potentiometer.
		Adjust the values of the inductances, capacitors and number of switches to your variable capacitor and desired bands, it is not so critical.
	home.hetnet.nl /~pa2ohh/03rega.htm (1253 words)

	Regenerative Blower Ring Blower Side Channel Blower
		Republic Regenerative Blower configurations are available in either single (one impeller) or double (two impeller) stage.
		The system voltage and frequency is the same as stated on the rating plate +/-5% voltage and/or +/-2% frequency deviation from the rated value without reducing output.
		Connections should be arranged and attached according to the circuit diagram on the terminal box.
	www.republicsales.com /products/blowers/republic-regenerative-blowers (524 words)

	Antique Radio Classified--Homebrewing
		The major drawback of the tuned-grid, tuned-plate regenerative receiver was that the plate circuit had to be retuned with each new setting of the antenna controls and grid variometer.
		Although primarily meant for Amateur use, the Reinartz circuit was popular with the public and many were homebrewed for broadcast reception during the radio boom of 1922-1923.
		Sidebar, figure A. GRID LEAK -- A high resistance placed in the grid circuit of a vacuum tube to permit the electrons forming the grid current to leak off after each charge thus preventing their accumulating on the grid in such numbers as to stop the flow from the filament.
	www.antiqueradio.com /Oct02_Corkutt_gridleak.html (2234 words)

	Some Regenerative Receivers
		From schematics of other regenerative receivers I have recently seen, this same basic circuit can be used with two separate triodes, or a tetrode or pentode as the detector stage.
		LOW MU triodes make the best regenerative receivers, since they slide very smoothly into and out of regeneration, whereas the higher mu triodes become quite "touchy" near regeneration.
		These receivers are shown in the "Circuits" sections of RCA Receiving Tube Manuals, RC-14, RC-15, and RC-16, and possibly others.
	www.mines.uidaho.edu /~glowbugs/regens.htm (503 words)

	Hydraulic Circuits Lab
		Set up components as directed by the laboratory instructor using the associated figures from the text as a guide.
		The following circuits are to be demonstrated to the instructor:
		a regenerative circuit per Figure 9-4 p 357
	www.rit.edu /~megite/Lab305_6_Circuits.html (138 words)

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