The figure shows how to use the LM3914 Bargraph with an external reference voltage source. The reference cannot be greater than the supply voltage.
This egg timer has been found in an English magazine that no longer exists in 1982. The...
This circuito from the 1977 GE Semiconductor Manual circuit provides timings from 0 to 90 seconds...
This crystal-controlled circuit was obtained from a 1980s documentation. The power supply should be 5...