manulonch
Newbie level 3
Hi,
I have a little problem with a 555 circuit,
here is the schematic
in fact the problem is simple,
when I do a short press on the switch, the relay remains activated during desired delay,
by cons if I press longer on the switch, longer than the time delay, the relay shut off as soon as I release this switch.
In fact, the delay begins when the switch is pressed, on the contrary with this table on right of the schematic.
Does someone have an idea ??
Thank you in advance.
Power supply is 12volts,
already try several 555
Schematic come from here : **broken link removed**
( sorry for my English, I'm French)
I have a little problem with a 555 circuit,
here is the schematic
in fact the problem is simple,
when I do a short press on the switch, the relay remains activated during desired delay,
by cons if I press longer on the switch, longer than the time delay, the relay shut off as soon as I release this switch.
In fact, the delay begins when the switch is pressed, on the contrary with this table on right of the schematic.
Does someone have an idea ??
Thank you in advance.
Power supply is 12volts,
already try several 555
Schematic come from here : **broken link removed**
( sorry for my English, I'm French)