Ultrasonic Inverter (CB21484E)

We found this circuit in a 1966 General Electric SCR manual. The circuit can be implemented with modern SCRs.

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Miller Oscillator (CB25007E)
This oscillator was found in the November 1986 issue of Radio Electronics magazine. The frequency...
Broadband Balanced Mixer MC1556G (CB14563E)
We found this circuit in Motorola's Linear Databook in 1990. The integrated circuit used is no...
Instrument driver (CB7357E)
This circuit was found in American documentation from the 1960s. The operational amplifier is from that...