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.
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.
Hi !
I am having A LOT of trouble to make this buzzer buzz. I am building a rain detector. When there's water the system closes, the LED lights and the buzzer buzzes, expect its not buzzing. I do not understand what I did wrong, I reconnected the circuit 10 times. Please help me. I am using a 9...
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...
I was trying to make a LED flasher with 555 IC. Then I thought how about I set a transformer with the output-ground pins. And I also reduced the resistance between 7 and 6 pin. And I am getting a 31V AC output from my transformer output panel. Looks like it is possible to make an inverter with...
Hey,
For my project I am trying to use a LM335Z to control the duty cycle of the output of a 555 timer.
So the duty cycle output of the 555 timer is 5 to 95% is this possible?
I had tried to use a thermistor to control the 555 timer to get a 5 to 95% duty cycle, with a 50% duty cycle at 25...
Hi, I'm new to circuits and electronics stuff, so kindly help me to solve the issue.
I'm trying to add led DRL to my car, everything is working well if I power my circuit with 9V battery, but if I connect it to car battery after 3-5 seconds it getting blown. I have no idea why it's happening...
hello i would like some help with a circuit i'm trying to make, here is what i want the circuit to do.
The Input 12v
And i want the Out put 12v
Once power is applied to a 555 timer, I want an 12vLED to be on for 5 seconds, and cut off (NO FLASHING). Once power is taken off, and applied again...
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