Alternative version of the popular circuit, 3V battery supply – Still operating at 1.3V The main purpose of this design was to obviate a small defect of the very popular Fridge Door Alarm circuit, ...
The circuit will provide a beeping sound to alarm the household that the refrigerator door has been opened for more than 20 seconds. 4060 – a 14-bit ripple counter with internal oscillator that has ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results
Feedback