We found this circuit in a 1968 General Electric publication. The circuit uses an SCR of the time, but any modern equivalent can be used. The relay must have contacts that support the horn current.
We found this circuit in a Linear Technology component manual. The circuit also has a DC zeroing...
This circuit has a scale of 0 to 2.56 V, but it can be changed by changing the values of the...
Figure Bellow shows how to use a 7490 (TTL) IC to divide the frequency of a TTL signal by 6; The...