Pages: [1]   Go Down
Author Topic: 10v PWM  (Read 1066 times)
0 Members and 1 Guest are viewing this topic.
Offline Offline
Full Member
***
Karma: 0
Posts: 134
We were born naked, wet and hungry. And then things get worse!!!
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hey..In the PWM for fade in and fade out, I need fade in and fade out a 10v bulb, its not possible to directly get a 10 v supply from the controller..is there any other IC which i can use to get that?
Logged

Offline Offline
Full Member
***
Karma: 0
Posts: 134
We were born naked, wet and hungry. And then things get worse!!!
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Err...
Logged

Seattle, WA USA
Offline Offline
Brattain Member
*****
Karma: 549
Posts: 46090
Seattle, WA USA
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Quote
Err...

Err... what? Err... as in "Never mind"? OK.
Logged

Offline Offline
Full Member
***
Karma: 0
Posts: 134
We were born naked, wet and hungry. And then things get worse!!!
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

No..I sent Err.. Coz i tot that this question is silly.. But really am stuck.. AM a beginner..

How can i do that??
Logged

0
Offline Offline
Faraday Member
**
Karma: 7
Posts: 2526
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Use a transistor to turn on the 10V bulb. See examples for driving motors, etc.

This tutorial on the playground shows the circuit.  You'll place your 10V bulb where the solenoid (L1) is, and you won't need the diode D1.

If your bulb doesn't need much current, you can probably get by with something small like a 2n2222.

You can apply PWM to the transistor.

-j
« Last Edit: February 24, 2010, 09:20:17 am by kg4wsv » Logged

Forum Administrator
Offline Offline
Newbie
*****
Karma: 3
Posts: 3
View Profile
 Bigger Bigger  Smaller Smaller  Reset Reset

Hello

are you using one of those dimmers that work with a voltage from 0 to 10v or an actual 10v bulb?

If you're using a 0/10v dimmer you just need to create a small amplifier using an op-amp that will multiply the 0-5v of arduino to 0-10v needed (the amplifier would have to be powered at 12v)

see the circuit at http://en.wikipedia.org/wiki/Operational_amplifier_applications#Non-inverting_amplifier
if R2 is the same as R1 (let's say two 10k resistor) you get a x2 aplification factor.

You could use an LM358 as an opamp.
I've used this circuit to control fluorescent lamps multiple times and it works

m
Logged

Pages: [1]   Go Up
Jump to: