This small signal amplifier circuit was found in Motorola's 1969 documentation. The FET and the transistor can be of any type and is battery powered since the consumption is very low.
This is another possible version of a negative voltage generator using a 555 integrated circuit. The...
This common configuration source with diode bridge and single winding transformer was found in a...
This circuit has appeared on our site several times as a battery status monitor. In this...