This circuit was found in a 1969 Motorola documentation. The FET admits an equivalent. The circuit has high input impedance and is powered by voltages from 6 to 30 V.
This high impedance step suggested by an English publication can operate up to 1 MHz with 1 V rms...
This timer of 10, 25, 45 seconds and 5 minutes has its times selected by the keys. The circuit drives...
When the power is turned on, the output that goes to the high Iogic Ievel is not necessarily the...