5 LED Log Scale with U257B (CB25442E)

The circuit was found in the February 1992 Radio Electronics magazine. The scale can be changed by changing R2 and R3.

TV Transmitter (CB18042E)
This transmitter outputs signals to the analog TV range operating with composite video signals for analog...
3 and 6 V Stabilized Solar Power Supply (CB18661E)
This circuit, with output currents up to 500 mA, can stabilize or regulate the output voltage of a...
Infrared Remote Sound (CB17640E)
The critical point in this project is the adjustment of the optical system, mainly to avoid...