AC voltage control (CB8904E)

This circuit was found in a 90s Hands On Electronics. The semiconductor component is a Triac of the time.

9 Amp Regulator LM350 (CB17550E)
With this circuit it is possible to regulate a source of up to 9 A using 3 LM350. The integrated...
Temperature Control On Off L121 A (CB15128E)
This circuit was found in the SGS manual of linear integrated circuits of 1982. The circuit...
Indicator Light 555 (CB13608E)
When the input of this circuit goes to high level, the LEDs start to flash alternately. The...