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.
3KSMC21AH 3000W Transient Suppressor from Taiwan semiconductor Taiwan Semiconductor is making...
This circuit was found in a 1965 General Electric documentation. SCRs and unijunction may be...
We find this circuit in a 1970 publication. Transistors can be replaced by current equivalents and LDR is...