This circuit was obtained in a documentation from the National Bureau of Standards of 1968. The circuit is of low current and the output can be changed to voltages between 2 and 30 V.
This circuit should be used with low frequency signals only. The circuit is from a documentation from the...
This alarm circuit was found in the April 1975 issue of Radio Electronics magazine. It is a basic...
This circuit supplies 5 V from two AA batteries. The output current is 4 mA, resulting in an 11 mA...