Simple 1-tube receiver (T960E)

This 1V heater tube circuit was found on a Radio Craft from 1945. The circuit is for medium wave and can be used as a tuner.

Auto Alarm (CB4776E)
This interesting automotive alarm was found in a 90's Popular Electronics. The circuit uses...
7W Amplifier with LM383 (CB1001bE)
This amplifier provides a maximum power of 7 W, depending on the supply voltage. The integrated...
30 s delay with PUT (CB21417E)
This circuit was obtained from a General Electric documentation from 1967. The time is given by...