DC stands for Direct Current, which means the flow of electric charge in a single direction. Examples of a DC source are batteries, solar panels, dynamos.
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DC Current Regulator 24v [closed]
I am trying to connect solar panels to a battery and then add a grid tie inverter of 1 kW. If you connect the grid tie inverter directly to the battery it draws way too much current, gets too hot and ...
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42 views
Frequency and magnitude of power variations in a DC circuit.
I have a 5 V 5 A power source which is connected to a simple development board with a processor that draw current dependent on utilization. I use a multimeter that measure 1000 samples / s to measure ...
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Electrical saftey of metal panel-mount DC jacks
Context:
I have a robotic arm with a series of servo motors, that together draw up to 3A from my bench supply (depending on the load on the servos). To make it easier to transport the robot around, ...
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Can supplying DC power into an AC device break the device?
I have an AC device that takes 12 volts 47-63Hz AC. It is a water softner that is essentially an electromagnet. I lost the original plug and supplied it with 11.2V DC, it came on for a few minutes and ...
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I think I am looking for a specific DC relay switch
I looking for a switch not sure what kind though.
let me explane:
I have 2 sources one creating DC 12v, 2 one creating around 6v DC
One source works for about 12 hours each day then stops
the other ...
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Why are the power transmission/distribution systems AC and not DC?
Is there a good reason why we are not in the process of completely converting our electrical transmission system to DC? The main reason for using AC on the grid (no offense Tesla, I love you man) was ...
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2 full bridge with 2 secondary winding in series… is it possible?
simulate this circuit – Schematic created using CircuitLab
Is this possible? Think of the center tap transformer as a 2 winding connected in series
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3answers
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How is current lowered as Voltage is increased in AC power transmission
I was reading about power transmission on wikipedia and came across the explanation of the efficiency of AC power transmission that said power in the load = (I^2)* R while power transmitted= IV. The ...
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52 views
Which electro motor to use for steering a kite? (guestimation marathon)
I'm doing a pet project in which I want to fly a kite from my computer. For this to happen my plan is to build a little box hanging under the kite which includes a raspberry pi (connected to my laptop ...
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1answer
125 views
Mixing AC and DC power in a circuit
This is likely a noob question, apologies if the answer is obvious.
I'm trying to control a furnace using a 3.3V microcontroller. The furnace operates by connecting a common 21V AC "hot" line to one ...
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2answers
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DC Voltage Grounded with AC Input
This is an image from a book showing us how to solve BJT circuits via AC analysis:
So I understand that when doing AC analysis to ground all the DC voltage sources but I don't understand why. Can ...
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925 KW DC motor [closed]
I found our 925 KW DC motor ,which is repaired and kept for service behaved in a different manner.Initially for about 10 to 15 seconds it is running in one direction and immediately it is changing its ...
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Should I use multiple voltage regulators?
I have five devices that need to be powered. I would like to use one DC source to power the four devices. Should I use voltage dividers, voltage regulators or a mixture of both? Also, any ...
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DC-DC isolation for my car stereo… Where do I start?
I recently noticed that my jeep's stereo whines with a frequency that seems proportional to the rpm of my engine (and alternator), and is louder when my headlights are on.
If my stereo was powered ...
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1answer
126 views
(How) can I run a microcontroller and DC motor from the same battery?
I have a microcontroller (a PIC10F200) that I'm using to control a DC motor. It's a very simple circuit. A button is pushed and the pic sends output for certain increments of time. The thought is to ...
