This circuit is from old documentation, but it can be implemented with more modern equivalent components. The transistor can be the TIP31 with a heatsink and the 1N4002 diodes.
This circuit was found in Radio Electronics from the 90s. The circuit employs a transconductance device and...
This circuit can be used as a basis for the design of battery chargers with up to 1.5 A of...
This circuit was obtained in a 1974 publication on Motorola PUT (Programmable Transistor...