This circuit has its application suggested in an alarm system. The circuit is from an old RCA manual. R1 has 5.6 ohm, R2 22k, R3 2k2. The capacitor is 8 uF.
This circuit is a kind of Hertz Loop that can be used to check the operation of transmitters and...
Suggested by Motorola documentation from the 1980s, this circuit uses power transistors from the...
This circuit is from Popular Electronics from the 90's. The circuit discharges the battery with a...