tag:blogger.com,1999:blog-3153881528840143069.post2072652638859510633..comments2023-08-02T20:54:52.429+10:00Comments on Grant Trebbin: MeanWell LDH-45A-350W Dimmable LED Driver EvaluationGrant Trebbinhttp://www.blogger.com/profile/13253301568478517009noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-3153881528840143069.post-31452288511199209482017-10-10T22:29:16.214+10:002017-10-10T22:29:16.214+10:00I don't have a unit handy to check at the mome...I don't have a unit handy to check at the moment but I think your second option will almost work. A pot between Vin+ and Dim- with the centre on AnalogDim might work. If not you might have to then tie Vin- and Dim-. Sorry I can't be of more help.Grant Trebbinhttps://www.blogger.com/profile/13253301568478517009noreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-29648166719963352382017-10-07T00:14:31.507+10:002017-10-07T00:14:31.507+10:00How do you use analog dim without a floating power...How do you use analog dim without a floating power supply?<br /><br />Can I:<br />- put a simple resistor between AnalogDim and Dim-<br />- put a pot with centre to AnalogDim and ends to Vin+ and Dim-?<br />- other circuit?<br /><br />PaulPaulNewfhttps://www.blogger.com/profile/07524307970884135857noreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-37130946021306182182016-08-03T22:09:10.119+10:002016-08-03T22:09:10.119+10:00Hello Grant Trebbin,
Thanks alot for your support....Hello Grant Trebbin,<br />Thanks alot for your support. You are right.<br />As you recommend I've added 6 more LED's (14pcs at all in series) and everything start working as it should be.<br />Once more thanks.<br />Best regards,<br />AndryAnonymousnoreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-34714783658195986272016-08-03T17:53:11.167+10:002016-08-03T17:53:11.167+10:00Thanks for the question. I added a small explanat...Thanks for the question. I added a small explanation to the end of the main article about what I think is happening. Hopefully this helps you out.Grant Trebbinhttps://www.blogger.com/profile/13253301568478517009noreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-10734242618635772702016-08-03T14:17:26.124+10:002016-08-03T14:17:26.124+10:00Hello
Please give an advice with PWM and analog di...Hello<br />Please give an advice with PWM and analog dimming on LDH-45B-350.<br /><br />Input data: 24V DC as power supply. 8pcs in series 1W LED Red.<br />When I turned on power supply LEDs on the output start to shine on full brightness. Seems everything is fine.<br />The problem is in that when I connect DIM- and PWM DIM pins together with a wire directly as short connection to switch of LEDs on the output my LDH- driver still supply voltage and current to the output. <br />Also I've tried to connect DIM- and Analogue DIM pins together but unfortunately with the same result.<br />Applying PWM signal (0-5V) to DIM- and PWM DIM pins gives no influence to the output independently of duty cycle from 0% to 100% on the output there is full brightness of the LEDs.<br />I've trying everything above with two LDH-45B-350 devices with same negative result.<br /><br />Thanks in advanceAndrynoreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-81756282969067826962016-06-29T23:49:32.295+10:002016-06-29T23:49:32.295+10:00Hello,
This driver is very essential for the techn...Hello,<br />This driver is very essential for the technical job. The diagram is very essential report for the people or technician. Thank you for your nice sharing. Jason L. Trevinohttp://www.zoniv.com/best-multimeter/noreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-12637866614250195822016-06-29T19:38:00.299+10:002016-06-29T19:38:00.299+10:00nice share.nice share.Anonymousnoreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-9625519150434916052016-04-21T07:39:49.866+10:002016-04-21T07:39:49.866+10:00Thank you very much!
I will follow your advices!!!...Thank you very much!<br />I will follow your advices!!!Yuriynoreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-83990380897492370862016-04-20T23:39:50.199+10:002016-04-20T23:39:50.199+10:001. Connecting Dim- and Analogue Dim is the same as...1. Connecting Dim- and Analogue Dim is the same as putting zero volts across these terminals, so the LED should be off.<br />2. Don't know, but you're right. It would have been clearer if they labelled the terminals like this.<br />3. Yes that's right. Dimming will occur between 0.25 and 1.3 volts<br /><br />If you're having trouble I'd make sure that everything else works. Test that it works without any dimming first.<br /><br />An easy way to test the Analogue dimming function would be to connect a AA battery across something like a 1K potentiometer and use that to generate a voltage between 0 and 1.2VGrant Trebbinhttps://www.blogger.com/profile/13253301568478517009noreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-50322092202056521992016-04-20T21:07:08.182+10:002016-04-20T21:07:08.182+10:00Can you throw some light on this item. I try analo...Can you throw some light on this item. I try analogue dimming and I fail. I have questions:<br />1) If I connect Dim- and Analogue Dim a LED will be switched off?<br />2) Why Analogue Dim is not marked like Dim+?<br />3) Am I right, that I should have power source with 0-1.2 VDC and connect - to the Dim- and + to the Analogue Dim?<br />Thank you in advance, Yuriy Yuriynoreply@blogger.comtag:blogger.com,1999:blog-3153881528840143069.post-90533203820343326242015-06-16T15:43:34.834+10:002015-06-16T15:43:34.834+10:00This comment has been removed by a blog administrator.Stephanie6https://www.blogger.com/profile/16821279776667786597noreply@blogger.com