This circuit is better than the previous one in that the control is isolated by a transformer. The transformer has 110 or 220 V primary and 6.3 to 12 V secondary with 200 to 500 mA current.
The basic integrated circuits of this 1988 multimeter are no longer very common today, but if...
This circuit, found in a 2000 documentation, is used in simple artificial intelligence and robotic...
This basic configuration can be found in a lot of articles on this site. In this case, the relay...