In this oscillator circuit using 3 TTL inverters we have all the conditions for the frequency calculation. Power must be supplied with 5 V. The circuit is from an American TTL documentation.
This amplifier for hearing aid was found in a 1968 documentation using an integrated of the time....
We obtained this circuit from a 1993 documentation. The circuit has 9 current ranges that are...
In the figure we have the transmitter of a data transmission system with optical fiber suggested by...