Flasher CA3130 (CB22004E)

Found in an English documentation from 1977, this flasher or pulser circuit drives an LED. The frequency depends on C2.

12 V to 110 or 220 V Inverter (CB17056E)
Depending on the transformer used, the power of this inverter can reach 300 W. This is a critical...
Hearing Aid Amplifier (CB21797E)
This 4-stage amplifier was found in a Mullard transistor manual from 1960. The circuit has a...
Variable Flasher LM3909 (CB25425E)
This configuration was found in the January 1992 Radio Electronics magazine. The frequency is set...