| Have you ever needed to power a 12-volt relay in a circuit but only had 6 or 9 volts available? This simple circuit will solve that problem...
All items tagged with Simple and relay (4)
| Simple triangle-wave generators have a weakness in that the waveform of their output signal normally cannot be modified. The circuit pre...
| When it comes to input selection in a preamplifier, the use of a relay is always better than a simple rotary switch - at least from a qua...
| This relay card connects to the universal I/O-interface for IBM PCs described in the May 1991 issue. Simple to build and program, it ofter...