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ocrdu
  • Member for 4 years, 5 months
  • Last seen this week
27 votes
Accepted

Order of operations and rounding for microcontrollers

26 votes

Resistor 100k¾ indicated in datasheet

23 votes
Accepted

Why doesn't an AC solenoid coil change magnetic polarity on each cycle?

18 votes
Accepted

What is the reason for some flashlights emitting light in a square shape?

16 votes

Using a 2 A, 48 VDC rated switch in a 8 A, 12 VDC circuit

15 votes

Why do trolleybuses power cables use DC and not AC?

13 votes

Device to power either a red LED or a green LED

12 votes
Accepted

What is this component? What is its purpose?

12 votes

Solar panel voltage drops when connected to load

11 votes
Accepted

How important is the gate threshold voltage on a MOSFET?

11 votes

How do/can I charge a Li-po battery without a fancy charger (just using a current)?

10 votes

Where does the 3 V go in this circuit?

9 votes

200 mA output from the Arduino digital output

9 votes
Accepted

DC motors run slow and weak. Can the culprit be the motor controller?

9 votes

3.5mm audio headphone jack

8 votes

ESP32 ADC not good enough for audio/music?

8 votes
Accepted

Why is LM2596 buck converter output current low when used as a mobile charger?

8 votes
Accepted

Can PWM act like a power source?

8 votes
Accepted

Meaning of the symbol

8 votes
Accepted

Weird voltage drop when connecting a micro-controller board to a point in a voltage divider circuit

8 votes

Can a DC voltage source be used for a transformer?

8 votes

What is the maximum voltage of an AAA battery?

7 votes
Accepted

Recharging a Li-ion battery while using it

7 votes

Figuring out pin 1 on this IC

7 votes
Accepted

Is it safe to use a 27A battery instead of a 23A battery in my doorbell?

7 votes
Accepted

How can I re-assemble this cheap scale's LCD display?

7 votes

Component required to detect change of length

7 votes

Could someone help me identify this component?

7 votes
Accepted

Can I power an ESP32 through the Vin pin?

6 votes
Accepted

Why can't I trigger my relay?

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