This circuit was found in old documentation, but the setting applies to any operational. Resistors and capacitors determine the frequency. For the indicated values the frequency is 10 kHz.
This circuit trips when the input voltage exceeds 30 V. Its base is a DIAC and it can be used to...
This circuit was found in an Elektor from the 90s. The circuit is critical, requiring a very...
This VCO makes use of an RC4558 which is an operational amplifier with characteristics close to...