Tut's user avatar
Tut's user avatar
Tut's user avatar
Tut
  • Member for 10 years, 8 months
  • Last seen this week
  • Circleville, OH USA
46 votes
Accepted

What are those small metal bars going across a PCB for?

39 votes

Why is there a diode connected in parallel to a relay coil?

37 votes
Accepted

Step up 3.3V to 5V for digital I/O

17 votes

Why are circuitboards traditionally green?

12 votes

Software interrupt vs function

10 votes

DC Motor + 9 V battery + 270 ohm resistor = Nothing (Motor won't turn)

10 votes

Single transistor level up shifter

10 votes

I have no UART on my microcontroller so how can I add one?

9 votes
Accepted

PIC16F628A Resetting after relay turned off

9 votes
Accepted

How the time is converted into distance by multiplying it with 17,000

8 votes
Accepted

Electrical conductivity to determine reservoir water level to switch on/off pump

8 votes
Accepted

Circuit that measures the speed of sound in concrete

7 votes

High Current DC Motor Driver

6 votes

What is the function of the capacitor and the diode here?

6 votes

230V/230V AC relay circuit

6 votes
Accepted

Base conversion and equations

6 votes
Accepted

How to program the flash of multiple PIC controller

6 votes

Arduino crashes switching 230V relay OFF

5 votes
Accepted

The difference between Atmel ATmega16u2-MU and -MUR

5 votes

Driving high side MOSFET problem

5 votes

I am having an issue with relays sticking

5 votes

Why is this MOSFET getting very hot?

5 votes
Accepted

How do I detect / retrieve the silicon revision of a dsPIC?

5 votes

Is there a convention for the polarity of voltage specified as \$V_{XY}\$?

4 votes
Accepted

Pressing same key rows at the same time

4 votes
Accepted

Why is this BJT not going into saturation?

4 votes

5V@5A switching power supply shuts down after few seconds

4 votes
Accepted

Is the information in MODBUS function code 16 redundant?

4 votes
Accepted

STM32F103 - TIM5 doesn't exist on medium density devices ? How do I tell what else is missing?

3 votes
Accepted

Pull up resistor