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Electrical Engineering
EJE's user avatar
EJE's user avatar
EJE's user avatar
EJE
  • Member for 4 years, 5 months
  • Last seen more than a week ago
Profile Activity

71 Answers

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7 votes
Accepted

Safe continuous discharge rate of a car battery

7 votes

How do I lower current usage on a 12 VDC fan hooked to a battery without a rheostat?

5 votes
Accepted

Replacing three AAA batteries with a 3.7 V, 1200 mAh lithium battery

4 votes
Accepted

Power supply fuses and varistor

3 votes

Issues with simple NiCd battery charger circuit

3 votes
Accepted

High voltage when charging NiMH battery?

3 votes
Accepted

What's the simplest way to produce 150VDC for activating my piezo stack?

3 votes
Accepted

Can a CPU heatsink be used to cool a TO-3P or a TO-220?

3 votes

How to eliminate 3.3V regulator output spiking

3 votes
Accepted

Less than minimum charge voltage for NiMH battery and extra parts in a "simple" circuit

3 votes

Op-amp - minimal differential voltage?

3 votes

Simplest current limiting method for battery charging

3 votes

How to fix oscillation of an 'over-discharge protection' circuit for a lead-acid battery

3 votes
Accepted

Why is this LM317 giving an unexpected output?

3 votes

Lead acid battery and lead acid battery charger -- specs don't match, but can I use them anyway?

3 votes

Limit current drain from 12v7Ah Sealed Lead Acid Battery

2 votes

charging current of lead acid battery

2 votes
Accepted

What is the right voltage to charge a flooded lead acid at CV? Also it got pretty warm while filling up acid

2 votes
Accepted

Replacing the selenium rectifier in a vintage car battery charger

2 votes

Battery charger for AA batteries

2 votes

How to operate more than one relay module by arduino

2 votes

Using 110 Vac incandescent light bulb at 220 Vac with a series diode

2 votes

Time constant of a high-order RC circuit

2 votes

Using NiMH batteries with dumb charger designed for NiCd?

1 vote

Using an optocoupler to separate a 4-20 mA loop

1 vote
Accepted

Pump undervoltage protection

1 vote
Accepted

How to configure wiring for a pair of Valet Vacuum System 220 V, single-phase motors

1 vote
Accepted

Effect of temperature on battery charging

1 vote

Turn signal detector

1 vote
Accepted

Driving a bi-color LED while saving current

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