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.
I need a circuit that will stay at a logic state low for ten or so minutes then switch and stay at a logic state high. I need it for a heater indicator to let you know the heating element is hot enough. Any and all help will be greatly appreciated.
I'm running a piece of nichrome ribbon (resistance unknown) with a 12v 6A supply and controlling the temperature with a SSH7N90A mosfet. The temperature range will be between 310-400 deg. farenheit. I was going to use the timer as an indicator so it would light up when the element was hot enough, but I'd rather have a thermometer. If I used a temperature sensative resistor (thermistor i believe) and an op amp with an analog meter could I make a cheap analog thermometer? Any other ideas?
My goal is to be able to send a clock pulse from a 4001 NOR gate oscillator and increase the temperature by increments of 10 degrees.
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