555 Latching

120

01:53:34

Left button -> Latch
Right button -> Unlatch

published 6 years ago

kiani

6 years ago

Hi, Hungary,,,,,1st or 2nd. Time i see someone uses the reset pin...... How much current can real 555 issue,, just nake sure yiu don't exceed the limit, feeding a relay.. Thats all my knowledge allow me to say...

hurz

6 years ago

@kiani, nothing against to use the reset pin, any issues? This methode without reset pin needs an extra potential to switch. So for long wires you need 4 instead only ground and two hot, in total three. Check this http://everycircuit.com/circuit/6336824600166400

summoner

6 years ago

Thanks! My real NE555P max output current is 200 mA if I remember correctly.

summoner

6 years ago

And working on 4,5-18V DC

summoner

6 years ago

In the real circuits must be build with an overvoltage protection.

hurz

6 years ago

most 555 from china i have seen today do not withstand more then 12V

summoner

6 years ago

I Have a Texas Instruments NE555P

hurz

6 years ago

Right, they also know the company symbol, easy

summoner

6 years ago

I use TI LM317 positive voltage regulator because the regulator's max input voltage 37V and because its protect from the overvoltage in heavy equipments.

hurz

6 years ago

interessting

summoner

6 years ago

Sarcasm?

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