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Results tagged with voltage-regulator
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user 230
A voltage regulator is an analog circuit that produces a stable output voltage that doesn't vary with input voltage or load changes. Switching regulators are much more efficient than linear ones.
26
votes
Accepted
Capacitor Sizes for 7805 Regulator
First Starting?
Build it with either; it will work fine for you. The second option with the large capacitors and the extra small one is "more stable." Just build this, do not worry about why if you …
- 13.5k
12
votes
How does an LM7805 voltage regulator work?
This is an excellent way to understand the theory. A linear regulator will use a transistor to step the voltage down as an inline resistor(the transistor can be modeled as a variable resistance) with …
- 13.5k
5
votes
Accepted
3.3V @ 10mA from 5V - 35V
Use a linear regulator that can handle 5V to 35V input. It outputs 3.3V.
It is that simple. You can use a buck regulator, if efficiency is an issue. but 10mA at a 35V drop is still only a 350mW dissi …
- 13.5k
4
votes
Why is my power supply putting out 3.85v instead of 5v?
Did you measure the voltage of your battery pack under load?
Battery packs can have a small dip in voltage due to charge level, but often the way a battery fails is best simulated as an ideal voltage …
- 13.5k
3
votes
Why is my power supply putting out 3.85v instead of 5v?
This may seem obvious, but did you wire it correctly. linear regulators cause a rather large drop if you mix up ground and power. There are a number of other ways dependent on your package that can ca …
- 13.5k
8
votes
Accepted
Can I use an amp before my voltage regulator to ensure I get 5v?
Leon is correct here. Let me approach your question in more detail.
The issue here is simple, for an op-amp to output 7V it needs to have a rail that is at-least 7V, so you will still need another po …
- 13.5k
5
votes
Accepted
Arduino powered by 24 volt battery
You are going to want to use a linear regulator. This will be very inefficient with respect to power efficiency, but your arduino should not use much power and this should make the power point moot.
H …
- 13.5k
2
votes
iPod Car Charger w/ Audio Out
This looks proper. If you pull the D+ and D- lines to the proper voltage, as it seems you are, it tells the iPod/iPhone to pull current.
When I look at the list of the pins, the ones you linked. It …
- 13.5k