This circuit generates sequence of pulses in order and times determined by the capacitors in pins 6 and 7 of each timer. The circuit is from an old Mullard (Philips) manual.
This configuration is from a 1964 US documentation valid for any FET. The range of power voltages...
The operational amplifier used in this circuit from a 1970s publication is no longer easily found...
This circuit was found in an old American documentation. It can operate with signals from 40 Hz to...