The circuit selected is from the 1960 Mullard transistor reference manual. The circuit is powered by a single 1.3 V battery and the transistors are germanium.
This simple circuit is designed to charger AA or AAA Nicad batteries. Current can be changed...
The circuit shown in the figure is suggested by Texas Instruments in its Linear Circuits...
A touch of a sensor triggers this minute for a time determined by R4 and C3. Times can be between a...