Bass Control (CB21294E)

This circuit with losses of 20 dB at 350 Hz was found in older documentation, but it applies to modern preamp and amplifier circuits.

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Composite amplifier (CB20632E)
This circuit combines a low-offset and a high-speed operational amplifier. The circuit was found in...
Touch Switch (CB26207E)
We found this circuit in the 1983 Radio Electronics Special projects magazine. The components are...
Modulated Oscillator (CB22067E)
This power oscillator uses an LM380 amplifier. We found it in old English documentation. The C3...