Voltage with PWM booster.
Voltage with PWM booster.
I'm measuring the output of the voltage from the LED PWM. I have the PWM boosters installed. At 100% the voltage is ~8V. Why isn't it 10V? I'm not that familiar with PWM currents (simple analog for me). Is this a limitation of my multimeter or a problem with the controller? Also has anyone converted the PWM signal into an analog one. I use the Thomas Research LED drivers, which have dimming but do not support PWM signals.
Re: Voltage with PWM booster.
With Meanwell drivers, you can always make up for the difference using the trimpot inside the driver. I'm not sure on Thomas though. Does it have a trimpot for current adjustment?
Also, I was always curious to know if they dim down to 1%. Do you have it hooked up yet?
Also, I was always curious to know if they dim down to 1%. Do you have it hooked up yet?
Roberto.
Re: Voltage with PWM booster.
No I haven't hooked it up yet. Using a regular potentiometer, having it set all the way down still yields. Not sure how little. The thomas drivers are not meant to be opened. I don't know if there is an internal trim pot. Why exactly is the controller only giving 8V at max ?
Re: Voltage with PWM booster.
It's a limitation of RA gen 1, but since meanwell drivers can adjust the current, this was never an issue.
The RA Gen 2 outputs 9.7V
You got PM
The RA Gen 2 outputs 9.7V
You got PM
Roberto.
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Felipe Stalvey
Re: Voltage with PWM booster.
Warum soll jemand der einen vernünftigen Test machen will ausgeschlossen werden? Es geht nicht darum einen Lampe geschenkt zu bekommen. Sondern das sie von 10 Leuten getestet wird. Die Diskusion nach dem M7 Forums-Test war so gut weil (zum Teil) die richtigen Leute eine Lampe zum testen hatten. Daher sollten gerade die berücksichtigt werden die einen guten Test hingelegt haben und diesen bei der M7R wiederholen wollen.
Just measured a drop to 2.496V, I'd say the brightness level is similar to my 'dim' ref pic. One more thing, I used a Fluke 87 to measure the voltages, while not as accurate as bench meters, I'd say its more than enough for this task. Looks like I'm SOL, board is multilayered, can't check traces, nor can I replace any one component.
Just measured a drop to 2.496V, I'd say the brightness level is similar to my 'dim' ref pic. One more thing, I used a Fluke 87 to measure the voltages, while not as accurate as bench meters, I'd say its more than enough for this task. Looks like I'm SOL, board is multilayered, can't check traces, nor can I replace any one component.
Re: Voltage with PWM booster.
Did you measure it with 100%?
Also, did you measure it straight into the output pins or with your drivers connected?
FYI, all boards are only 2-layer.
Also, did you measure it straight into the output pins or with your drivers connected?
FYI, all boards are only 2-layer.
Roberto.