Flasher CA3130 (CB22004E)

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

0.25 Hz Servo Shaker (CB19801E)
What this circuit does is to agitate a servo at a frequency of 0.25 Hz, which can be used in...
Ring Modulator (CB4227E)
This circuit is suitable for SSB modulation and was obtained from an amateur radio documentation from...
CW tone generator (CB21673E)
This telegraphy circuit generates an audio tone from a pure RF carrier. We found it in a...