This circuit was found in the November 1994 issue of Electronics Now magazine. The circuit is based on the 566 PLL and generates signals up to about 200 kHz.
The function of this circuit is the same as the previous one. The difference is in the use of an...
This shield circuit was suggested by a 90s Popular Electronics. The circuit can use either a triac for a...
This circuit also detects IR, providing LED indication. The circuit is used to indicate humidity in...