12 V Regulator

Using Arduino General Electronics
1

Hi. I'm using a 12 V regulator to power some computer fans. Is it necessary to use capacitors with the regulator or will it be fine without them. Thanks.

2

In general, you should use what the datasheet says.

If a (relatively) constant load like a fan is present, they are probably not necessary.

3

If a (relatively) constant load like a fan is present, they are probably not necessary.

Yes they are.
Anyway a fan is inductive and noisy so you defiantly need them with a fan.

There has been a flurry of these posts recently, I don't know what caused it but if any professional electronic engineer insisted in not putting caps on regulators he would be sacked, and quite rightly.

4

Thanks. The data sheet says nothing about capacitors. What amount should I use?

5

I doubt that can you link the data sheet?

6

Here is the data sheet.

7

Page 2 second paragraph. They say 0.33uF, and all the example circuits have 0.1uF on in and out.

8

Thank you so much.

9

There has been a flurry of these posts recently, I don't know what caused it ...

It's a conspiracy to rile you up. They switch back and forth between voltage regulator capacitors, bypass capacitors on ICs, and the capacitor on the shift register clock line.

Don