Found in an American publication from 1968, this circuit generates pulses at a rate of 2,500 per second. The transistor can be replaced by a modern equivalent.
In the figure we have a regulator circuit for output voltages of 0.5 to 10 V with currents up to...
Found in American documentation from 1968, this circuit has an acute cut-off of the frequency to...
When a model train crosses a level crossing, interrupting the light on the sensor, this circuit...