This is the basic full-scale circuit of an LM3914 for voltage measurement or voltage triggering and control. The power supply must be within the indicated range.
This circuit is intended to manipulate a transmitter (CW) from coded audio signals recorded on a...
This circuit is from a publication from the 60's. The transistors are germanium of the time....
The integrated circuit used is a double 741 from SGS. The transformer is the critical component of the...