This powerful pushbutton uses a power MOSFET. We found it in a Popular Electronics magazine from the 90s. The MOSFET must be mounted on a heat sink.
This low-pass filter with 741 op and symmetrical source was found in the August 1993 issue of...
The duty cycle of a Schmitt Oscillator can be programmed by R1 and R2 in this circuit. The...
This circuit is used to test capacitors with a working voltage above 150 V, detecting shorts or...