Short Wave Converter (T987E)

The conversion range of this circuit depends on the coil. The circuit uses two tubes, and the power supply is not provided.

Four Channel Mixer (Cb13613E)
We found this circuit in a 1974 integrated circuit manual. Operational amplifiers can be of...
Triggered 4011 Oscillator (CB16072E)
This oscillator can be used as a CIock-Triggered for various electronic applications. Oscillation only...
Ocean Sound Generator (CB25489E)
This circuit called “surf man” was published in the August 1992 Radio Electronics magazine. It...