This circuit is from the Linear Applications Handbook of the National Semiconductor of 1994. Transistors are common, but the integrated circuit is not easy to obtain today.
The circuit shown is from a 1978 Texas Instruments optoelectronics manual. The circuit can use...
The integrated 4017, a C-MOS counter, is one of the most popular in the design of sequences,...
This power supply was originally indicated for work with electroplating. The transformer is 2 A or...