Explorer for all ranges (T1098E)

This circuit was found in a Radio Craft from October 1946. Power supply not shown, and tubes are 1.5V filament types.

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...