This circuit is from an 80's publication. It makes use of small 6 V x 50 mA incandescent lamps. The diodes can be general purpose or even 1N4002. The transformer is 6.3 V with 100 mA or more current.
This circuit was found in documentation from Analog Devices from the 90s. The circuit uses...
This old circuit that makes use of germanium transistors, can be modernized with the use of...
March 2017 - Mouser Electronics is making available the new Olimex A20 OLinuXino single board...