This sequential beacon was found in an 80's Radio Electronics. The circuit can be designed using modern equivalent components. Triacs shall be fitted with heat sinks.
Here is an interesting game found in a 1992 technical documentation. In this game, a set of 9 red...
We found this circuit in an old documentation from 1979. It is a logic level tester that is...
This circuit is from the 80's but uses common components today. The relay is voltage sensitive...