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Door Knob Touch Alarm Circuit - theoryCIRCUIT
https://theorycircuit.com/door-knob-touch-alarm-circuit/
In this Door Knob Touch Alarm Circuit IC 555 employed as a monostable multivibrator and it produce square pulse at output when the trigger pin gets input and the output pulse duty cycle & duration can be varied by using variable Resistor VR1. Output pulse from the timer IC555 given to the transistor base through variable Resistor VR2, here C3 ...
RCA TV STEREO RADIO Parts and Knobs for Sale | Talon ...
https://talonelectronics.com/shop/custom.aspx?recid=8
Talon Electronics stocks a broad inventory of all kinds of new RCA service parts, electronic hardware and other items. We also carry an extensicw line of semiconductors, passives, and hardware for hobby, audio, test equipment, TV, stereo and radio use.
Amplifiers: Output stage - Lenard Audio
https://education.lenardaudio.com/en/12_amps_5.html
The output transistors do not increase the size of the audio signal. Output transistors can only add current. Quasi complementary is used in the majority of amplifiers. The first large silicon transistors (2N3055) enabled power amplifiers to be capable of 50 Watts but were only available as NPN and not as PNP.
Audiogon Discussion Forum
https://forum.audiogon.com/discussions/best-sounding-transistors
Each of the 12 transistors do not have to slew up the output as much when compared to the 4 transistor amp). As long as the power supply is capable, the 12-transistors will be more efficient in having more current on tap for the demanding music passages (even at …
Antique Radio Forums • View topic - Car Radio Identification
https://antiqueradios.com/forums/viewtopic.php?t=30954
Dr. Radio- I had a 1958 Chevy two door and it had a "hybrid" radio in it. However it only had one output transistor, one of the old TO-36 "doorknob" types. It was the only set that I recall having single ended output for having transistors in it. Never seen one since. Maybe it was sort of an experimental set for the 1959 model year.
Delco DS-501 Transistor ? | Electronics Forums
https://www.electronicspoint.com/forums/threads/delco-ds-501-transistor.14015/
2n235A is a TO3 case Germanium PNP power transistor. Ic max 3 amp, Ib max 150ma, BV (cbo) = 50 volt. With Ic=500mA hfe=40. Click to expand... The Delco DS-501 is in the big TO-36 doorknob package, and can dissipate. 150 Watts, much greater than the 2N235A . …
Output Transistors In Transistors for sale | eBay
https://www.ebay.com/b/Output-Transistors-In-Transistors/4666/bn_7022147050
Lot of 3 Vintage RCA SK3009 PNP Germanium Audio Output Transistor TO-3. $13.49. Was: $14.99. $3.99 shipping. or Best Offer.
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