This battery-powered micropower supply was shown in Radio Electronics magazine in 1991. The maximum current is 170 mA. and the integrated circuit is the MAX655 from Maxim.
This circuit is triggered by the touch of the fingers on a sensor. The sensor is formed by two...
The LM2904 is not very common today, but common comparators and operationals can be used in the...
This circuit is based on the Linear Technology LT1495 and was found in a 2005 manual. The circuit...