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 5.1 MHz oscillator was found in a 1980s American documentation. The used operational...
A NOR gate can be improvised using one NAND gate of a 4011 as shown here. The diodes are...
Found in the September 1982 issue of Radio Electronics magazine, this circuit triggers a relay...