Solar flashlight (CB20488E)

This circuit charges a battery to power a flashlight at night. The circuit is from an English publication from 1991.

Power Supply For FM Transmitter (CB4331E)
This 1.5 A source for FM transmitters was originally intended for the transmitter described in...
LC Oscillator (CB4552E)
This oscillator can produce 2 to 10 MHz signals depending on the coils used. The transistors can...
Monostable Using the 4098 (III) (CB139)
The third version for the 4098 is shown here (the others are CIR17E and CIR138E). It is a...