User Bryan Boettcher

8 votes

What is the simplest sound generating circuit?

answered Jul 24, 2012 at 19:48

8 votes

How to detect if a nearby parked car has started engine?

answered Nov 3, 2017 at 14:23

7 votes

Accepted

Do I need a current limiting resistor when powering an LED below its forward voltage?

answered Dec 11, 2012 at 22:00

7 votes

Running my atmega8 at 5.5V, risky?

answered Jul 18, 2012 at 20:32

5 votes

Why does micro USB 2.0 have 5 pins, when the A-type only has 4?

answered Jul 10, 2012 at 22:30

5 votes

Accepted

If voltage is the same across each resistor in a parallel circuit, what's the point of resistors if there's 4 of them in a ciruit with 50volts

answered Oct 1, 2013 at 18:28

4 votes

TRIAC dimmer, circuit design help (resistive load)

answered Oct 24, 2012 at 23:18

4 votes

What would happen if I connect two different DC voltage sources in parallel?

answered Dec 19, 2011 at 22:49

4 votes

Soldering a wire to a small MOSFET pin

answered Jun 4, 2012 at 17:36

3 votes

Can an optical mouse be used to measure distance down to 1-10μm?

answered Nov 5, 2013 at 19:31

3 votes

Low Voltage DC controlling 120 AC, with Arduino

answered Feb 10, 2014 at 15:24

2 votes

How do I use a button to wake up an atmega32?

answered Mar 3, 2014 at 19:18

2 votes

How to design drone power tether system? (high power with ultra light cable)

answered Nov 21, 2017 at 23:13

2 votes

Spot welder: High current advantage over high voltage

answered Feb 14, 2018 at 19:26

2 votes

What type of voltage control should I use for a battery power bank (using old alk. AA, C, D...) to provide low voltage for a light?

answered Feb 19, 2018 at 19:21

2 votes

Can Lithium-Iron-Phosphate or LiFePO4 batteries be stored in cold?

answered Nov 24, 2020 at 19:24

2 votes

acceptable bounds for replacement DC adapter

answered Jun 28, 2012 at 19:41

2 votes

Overload protection for battery

answered Jul 10, 2012 at 18:49

2 votes

Where can I get a small cheap linear actuator?

answered Jul 17, 2012 at 22:43

2 votes

Driving a high power (200mA) LED with a GPIO and NPN transistor

answered Oct 15, 2013 at 16:20

1 vote

Can I reduce rpm further of a gear motor by using PWM?

answered Dec 12, 2012 at 20:58

1 vote

MOSFET heat calculation question

answered Jan 11, 2013 at 18:57

1 vote

Peltier Unit Not Working

answered Nov 15, 2013 at 17:55

1 vote

Accepted

How to make 5v DC UPS Circuit?

answered Dec 12, 2016 at 14:58

1 vote

Accepted

Iphone Lightning Charger - How would one go about it?

answered Dec 23, 2016 at 20:00

1 vote

Balance cable for LiPo batteries

answered Feb 25, 2017 at 0:00

1 vote

Li-Ion vs Li-Poly For Quads

answered Feb 5, 2018 at 19:33

1 vote

Accepted

Shim to make PCB section thicker

answered Feb 7, 2018 at 19:25

1 vote

Spark Gaps on a Tesla Coil

answered Aug 22, 2017 at 21:44

0 votes

Safe and stable discharge rate for Li-Ion battery packs

answered Mar 2, 2017 at 15:04

Stack Exchange Network

38 Answers

What is the simplest sound generating circuit?

How to detect if a nearby parked car has started engine?

Do I need a current limiting resistor when powering an LED below its forward voltage?

Running my atmega8 at 5.5V, risky?

Why does micro USB 2.0 have 5 pins, when the A-type only has 4?

If voltage is the same across each resistor in a parallel circuit, what's the point of resistors if there's 4 of them in a ciruit with 50volts

TRIAC dimmer, circuit design help (resistive load)

What would happen if I connect two different DC voltage sources in parallel?

Soldering a wire to a small MOSFET pin

Can an optical mouse be used to measure distance down to 1-10μm?

Low Voltage DC controlling 120 AC, with Arduino

How do I use a button to wake up an atmega32?

How to design drone power tether system? (high power with ultra light cable)

Spot welder: High current advantage over high voltage

What type of voltage control should I use for a battery power bank (using old alk. AA, C, D...) to provide low voltage for a light?

Can Lithium-Iron-Phosphate or LiFePO4 batteries be stored in cold?

acceptable bounds for replacement DC adapter

Overload protection for battery

Where can I get a small cheap linear actuator?

Driving a high power (200mA) LED with a GPIO and NPN transistor

Can I reduce rpm further of a gear motor by using PWM?

MOSFET heat calculation question

Peltier Unit Not Working

How to make 5v DC UPS Circuit?

Iphone Lightning Charger - How would one go about it?

Balance cable for LiPo batteries

Li-Ion vs Li-Poly For Quads

Shim to make PCB section thicker

Spark Gaps on a Tesla Coil

Safe and stable discharge rate for Li-Ion battery packs