6VDC Amplifier (T485E)

This drum amplifier was found in an American documentation from 1947. It makes use of a mechanical vibrator to generate high voltage for the tubes.

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Overvoltage Switch CA3140 (AC)
This circuit was found in the June 1986 issue of Radio Electronics magazine. It is based on two...
2.5 V reference with LT1009 (CB14594E)
The circuit shown is from Linear Technology Applications 1994. The circuit provides an accurate...
Timed Courtesy Light (CB4782E)
When the vehicle door is closed, this circuit keeps the internal lights on for a time depending on C1....