We had found this circuit in a January 1961 Radio Electronics Magazine. Using it is possible to take measures from the gain of transistor with a common a multimeter.
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...