I want to replace this 3.7 Volt Lithium Ion battery. The dimensions are 1 14/16 x 8/16 inch. Can some help me find a...

I want to replace this 3.7 Volt Lithium Ion battery. The dimensions are 1 14/16 x 8/16 inch. Can some help me find a replacement? Thanks, Andy https://imgur.com/a/w5v2dHI

For a project I noticed my Arduino PWM pump controller (basically just an Arduino, MOSFET, and protection diode) was behaving oddly, so I powered...

For a project I noticed my Arduino PWM pump controller (basically just an Arduino, MOSFET, and protection diode) was behaving oddly, so I powered the pump directly from the 12V power supply, turning it off and on as needed manually. I looked more closely at my breadboard, and noticed the drain and source were touching. The circuit had been running for a few minutes this way. Did I damage my...

I WOULD LIKE TO KNOW WHEN THE SCHOOL CLOSED?

I WOULD LIKE TO KNOW WHEN THE SCHOOL CLOSED?

I am trying to create a project much like like a Marquee sign, I want to be able to control hundreds of LEDs from a set of chips. From my...

I am trying to create a project much like like a Marquee sign, I want to be able to control hundreds of LEDs from a set of chips. From my research I found the 74HC595 chip and using a bunch of these would probably work, but it would be nice if I had the ability to change each intensity of each LED like each LED pin had its own PWM controller on each LED ? Is there a chip-set out there t...

Guessing that there was no clever end run around the 30v maximum I tried a DC to DC converter set to 15v then measured the voltage between the...

Guessing that there was no clever end run around the 30v maximum I tried a DC to DC converter set to 15v then measured the voltage between the +38v and the +15v. Instead of 23 v it jumped around all over the place then settled on 3.x v. A cap between the terminals might not work either and may due to the fluctuating current short out the converter.

The lowest voltage it can measure is what powers the LED display so something must be acting like a DC to DC converter set at the display...

The lowest voltage it can measure is what powers the LED display so something must be acting like a DC to DC converter set at the display voltage. Additional resistance in series lowers the current too much to power the display. It only works on an ideal voltage source.

The Fieri light runs on 4 rechargeable cells 2p X 2s. Just wire it so that the voltmeter always gets 8 volts less than the ebike battery.

The Fieri light runs on 4 rechargeable cells 2p X 2s. Just wire it so that the voltmeter always gets 8 volts less than the ebike battery.

The impedance is 100k Ω. Put a 50 kΩ resister in series with the voltmeter and map out the correction.

The impedance is 100k Ω. Put a 50 kΩ resister in series with the voltmeter and map out the correction.

Hit just flashes. Furst guess is not enuff nano amps gits thru that yuge resistor. I ben very luky in that California no longer picks up toxik...

Hit just flashes. Furst guess is not enuff nano amps gits thru that yuge resistor. I ben very luky in that California no longer picks up toxik elektrikal stuff. But all I got is 2 resistors wif leads, .24 Ω and 220K Ω.

It simply loses linearity. At least up to 38 v where it reads 36 v. Who cares?

It simply loses linearity. At least up to 38 v where it reads 36 v. Who cares?