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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Electronic Thermometer (CB21356E)
This analog thermometer was obtained from an English documentation. The sensor is a common diode...
RF Sensor (CB4117E)
This circuit is a kind of Hertz Loop that can be used to check the operation of transmitters and...
AC Voltage Regulator LM317 (CB13053E)
Two 3-terminal regulators like the LM317 can be used to "clip" a sinusoidal signal, in order to...