This circuit uses uncommon Texas Instruments components today. The circuit is from an American documentation. Transistors are commonly used PNP. The display is 7 segment multiplexed.
Found in a documentation from the 90's, this circuit already includes an amplification stage. The...
This telecommunications circuit was found in a National Semiconductor publication from the 90s. It is...
We found this circuit in a 1986 documentation, but it can be easily assembled even today by the...