We found this micro amplifier in a technical documentation from National Semiconductor. The circuit can be used on an experimental phone, being powered even by alternative power sources.
This old circuit that makes use of germanium transistors, can be modernized with the use of...
The circuit presented was suggested by Texas Instruments in an opto-electronics manual. The...
This 4-digit digital clock for hours and minutes with CMOS integrated circuits was found in a 1995...