T
tong
Guest
I don't know why my periodic ON-OFF timer don't work. They are two CD4541.
I don't know how Master Reset (MR) pin work.
LOW -> HIGH = stop oscillator, output unchange ?
HIGH -> LOW = start oscilator, reset counter, output change ?
I test by install only the Right chip.
The output remain HIGH all the time.
I try to reset by apply V+ to MR pin, the output still HIGH.
I remove V+ from MR pin, the output still HIGH.
The Right chip do set "Auto Reset" when power on.
The Left chip don't set "Auto Reset".
I don't know how Master Reset (MR) pin work.
LOW -> HIGH = stop oscillator, output unchange ?
HIGH -> LOW = start oscilator, reset counter, output change ?
I test by install only the Right chip.
The output remain HIGH all the time.
I try to reset by apply V+ to MR pin, the output still HIGH.
I remove V+ from MR pin, the output still HIGH.
The Right chip do set "Auto Reset" when power on.
The Left chip don't set "Auto Reset".