This is a battery powered 3W power amplifier using germanium transistors. The circuit is from an English documentation from 1967. The transistors are from the time.
Incandescent lamps of up to a few amps can be placed to flash with this circuit. The frequency depends...
This circuit is from the National Semiconductor CMOS manual of 1977. What this circuit does is to...
We found this circuit in an old American documentation from years 80. The diode determines the frequency...