Without regulation, this basic circuit has the output current, and voltage determined by the transformer. The input can be 110 V and 220 V if the transformer used is of the indicated type.
This circuit is very critical in the adjustment. The coil should have at least 1000 turns of fine...
By pressing and releasing PB1, only one LED is lit, drawing a number from 1 to 6, as in a die. The...
This electromyography monitor is from a 1978 publication on operational amplifiers. The components are...