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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Low Frequency Divider (CB6344E)
This circuit was suggested by Motorola in a 1980s publication. It is based on a PUT that is not a...
DC Positive to Negative DC Converter (CB12956E)
We present a DC-DC converter circuit that can operate with input voltages from 2.4 V to 14 V and...
Black light (CB7898E)
This circuit was found in a PE Hobbyst Handbook of 1989. It uses a black light fluorescent of the time....