Found in American documentation from the 90s, this circuit provides three timings given by the graphics. The circuit can trigger different types of loads.
This bank of switches can be programmed in a variety of ways for logic experiments. The circuit is from...
Found in a Popular Electronics from the 90s, this circuit can act as a transmitter for an audio...
This circuit was found in a 90s Hands-on Electronics. The transistor can be a BC548. What it does...