This electronic roulette circuit with 10 numbers was found in a Popular Electronics from the 80s. The circuit uses indicator LEDs and the transistors are general purpose.
This circuit suggested by Intersil, provides a Kelvin scale of 3 and a half digits in a 7106, with...
This circuit suggested by Motorola can be used as LED high frequency modulator. One possible...
This LED diode test is suggested by the Texas Instruments optoelectronics manual. The transformer current...