next topic »

[on:]

I have been told I need to use a mosfet to get this working with my arduino as it is controlled with 2-10v
http://uk.farnell.com/jsp/search/productdetail.jsp?CMP=cmwis_email&sku=1936419
I am new to electronics and would be grateful if any one could post a schematic to allow the arduino pwm pin to control this bit of kit, also a link to the farnell site to which mosfet to buy as there are so many different types. I understand I need a logic type.
Any help would be appreciated.

[Reply #1 on:]

You were misinformed.
All that it requires is a digital output pin, 0/5V.

*** The "2-10V" means that it's good with a minimum of 0/2V and as much as 0/10V.  So controlling it with 0/5V is a winner. ***

[Reply #2 on:]

Are you sure, looking at the data sheet it says this prportional controller will only give 50% power at 5v and 100% at 10v. Or am i reading it totally wrong.

[Reply #3 on:]

The link you provided is for a solid-state relay.
Its input is 2-10VDC, its output is rated for 240vac.
It's "on" when its input is anywhere between 2 and 10V; it's "off" when its input is 0V.

[Reply #4 on:]

no it is a proportional controller here is a link to the data sheet.
http://www.crydom.com/en/Products/Catalog/p_cv.pdf

[Reply #5 on:]

OK
The link calls it an SSR, but its datasheet has it as a proportional controller.
So, it's different.

[Reply #6 on:]

So, you want/need a means of 0/5V (PWM?) to 0 to 10V variable?

[Reply #7 on:]

yes please

[Reply #8 on:]

OK
The link calls it an SSR, but its datasheet has it as a proportional controller.
So, it's different.

I think it is a proportional ssr

[Reply #9 on:]

I wonder if a PWM'ed 0/10V would suffice or if it requires a nice, smooth, 'constant' (within range) DC control voltage.

[Reply #10 on:]

I wonder if a PWM'ed 0/10V would suffice or if it requires a nice, smooth, 'constant' (within range) DC control voltage.

im not sure, the data sheet just gives  d\c voltage to power charts

[Reply #11 on:]

It'd be easy enough to switch (PWM) a transistor, and therefore the controller's input, between 0 and 10V, especially since it's just LED current there.
Smoothing the Arduino PWM (approx 430Hz ?) with a low-pass filter and an op-amp and then amplifying the result (X2) would be more complicated, but hardly impossible.

[Reply #12 on:]

It'd be easy enough to switch (PWM) a transistor, and therefore the controller's input, between 0 and 10V, especially since it's just LED current there.
Smoothing the Arduino PWM (approx 430Hz ?) with a low-pass filter and an op-amp and then amplifying the result (X2) would be more complicated, but hardly impossible.

can I have the easy option please as the other has gone straight over my head.

[Reply #13 on:]

OK.
Attached is a drawing for the first (easiest) option.
The transistor is just a "garden variety" NPN.

***  "Ordinary" SSRs need a load on the output - without a load the output will always show high-voltage (assuming use of a modern DVM) regardless the control state.  ***

[Reply #14 on:]

OK.
Attached is a drawing for the first (easiest) option.
The transistor is just a "garden variety" NPN.

***  "Ordinary" SSRs need a load on the output - without a load the output will always show high-voltage (assuming use of a modern DVM) regardless the control state.  ***

Excuse me for being a bit thick but is that a battery on the schematic?