We found this TTL circuit in a Texas Instruments optoelectronics manual. The power is 5 V and the LEDs are common.
In this circuit of the 80's components of the time are used. The circuit controls a direct current...
This is the basic operational amplifier configuration for gain 10. R2 can be changed to other...
The CMOS 4046 integrated circuit is not very common today, consisting of a very efficient PLL for...