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.
The integrated circuit of this 80's project is not common today. This is the HA2530 which must be...
This circuit is from a 1992 PE Hobbyst Handbook. The circuit fires an old electronic flash using an...
This complementary transistor stage was found in a 1968 publication. The transistors are germanium types and...