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Welcome to our site! Electro Tech is an online community (with over 170,000 members) who enjoy talking about and building electronic circuits, projects and gadgets. To participate you need to register. Registration is free. Click here to register now.
Hello,
I am using a 555 timer circuit in a monostable mode. Its output is going to a relay through a buffer and the relay is connected to another circuit. The over all project is to turn on a device and have the device be on for a predetermined time UNLESS activity is detected. If a user uses...
I have a need to turn off a load after set duration like 3min(have used different value of Capacitor and resistor) I am using a NE555 IC and going ahead with designing as shown below, my application in breadboard is working but I'll to press switch each time the off timer is needed to activated...
Can anybody advise me if the circuit attached will function as required.
The external timer supplies a 6 volt signal to the relay coil for between 3 & 9 seconds, this in turn drives the 12 volt motor for the 3 to 9 seconds & it also charges the 220uf capacitor.
At the end of the 3 to 9 seconds...
Hi to all - newbie here,
I am a programmer with basic knowledge of electonics, so please forgive my ignorance.
I'm trying to create a circuit (maybe using a 555???) that meets the following criteria:
The circuit has 2 inputs, the 1st is a NC momentary switch and the 2nd one is a NO momentary...
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