This circuit uses only transistors and was found in a 2003 documentation. Transistor 2N3055 must be mounted on a heat sink and the voltage is set to R10.
This digital / analog converter shield is suggested by MOTOROLA and is based on an operational amplifier...
This circuit is from old documentation and can be assembled with 2N2646 for the unijunction and...
This three-transistor amplifier uses a JFET at the input to increase the input impedance. The...