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.
When the supply is established, the load only receives the supply some seconds later, a time that...
With S1 closed, when dark, the triac will supply the load with the power set in R4. The LDR is...
This interesting amplifier for frame antenna for the medium wave range was found in a Popular...