This amplifier circuit with gain between 0 and 96 was found in the December 1983 issue of Radio Electronics magazine. The power supply must be 15 V.
This is another possible version of a negative voltage generator using a 555 integrated circuit. The...
This timer activates a relay after a time interval of up to 15 minutes has elapsed, starting from...
This circuit was used to regulate the speed of small DC motors of cassette recorders. However, if the...