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Each hour I am checking a fuse to see if it is blown or not. I send a short duration voltage out and during this same duration look for the in pin being "high". All works well with the strategy until I actually turn on power to the fuse side. Yes (and I laughed as well) the chip smoked. 1. My...

Looking at the diagram of the ULN2003; can someone explain what the notations "To 11,To10,To 4, and To1" are referencing? Also are the two bottom pins the supply to the motor? And finally shed some light on #6 out and #7 out? The motor is the 28BYJ-48. My first intro to steppers. Thanks

I know this is going to be a generalized discussion but I am trying to get a read on whether my thoughts on the problem could be valid. First of all voltage is 4.75V. 20M2 B.6 pin is outputting to MOSFET gate. MOSFET is switching on. With no load through Drain/ Source the voltage is 4.75V when...

I am blinking three different color LED's from C.0,C.1 and C.2 (08M2). I am using a light detecting resistor to turn on start operation at dusk and turn off at dawn. Using 4 rechargeable batteries and a 5V solar charger panel. I do have a diode to prevent reverse drain back to solar panel...

I am trying to use a voltage splitter with a photo resister to turn on the 08M2 chip at a certain darkness. Once on, the the outputs drive a mosfet to control 10mm LED's which are tied to the voltage rails separately. In action, the voltage to the 08M2 rises above 4V as it gets dark and the chip...

Researching using a depletion mode MOSFET as a voltage indicator for 115V line by attaching an antenna to the gate and having it in close proximity to the outgoing side of a fuse. If the fuse blows, no voltage would be sensed, the MOSFET would turn on supplying battery voltage to a PicAxe chip...

Would I need a back suppression diode for a trim potentiometer that I am using as an input voltage. After replacing twice, they perform on the first run but after power removed the 10k full scale reads approx. 5k full scale (the center pin now goes from 0-5k instead of 0-10k). Set Up: -small...

Trying to read two analogue voltage (0-5v) inputs on a 08M2 microprocessor chip. Using c.1 and c.2 pins. The test voltage measured at each pin is 2.03V and 2.34V respectively which should equate to 2.0V at each pin when rounded. I inserted the following test code with an LED just to see if the...