This circuit with the ULN3784B appeared in the October 1984 issue of Radio Electronics magazine. It can typically be powered from 9 to 24 V.
We found this circuit in a publication on operational amplifiers from 1978. The circuit is made...
This circuit allows the detection of RF signals using the lowest range of direct currents of a...
This circuit was found in the Radio Electronics magazine of May 1990. The supply voltage depends on...