Hi sir Mile What transistor can use replacement for bf245? Something simple and easy to obtain. For bf245 need to goo 45km with car and the price is 2.50 euro for 1 bf245. Is too much!!
Thank You!
Thank You!
An externally hosted image should be here but it was not working when we last tested it.
Autorange VU
Sorry to jump in but I think this circuit was posted in this thread a while ago. Schema attached. Can't seem to make it work right. I've built it twice thinking the first time was my bad but the second one came out really good. Anyway, all the led's flash together, in time with the music.I know I'm only using the +HV side and not the -HV side but I'm not looking for accuracy, just some moving lights and a power light to dress up a small solid state power amp I'm building. My +HV is around 25vdc. It's all hooked up to the left side of the amp. Any ideas?
Sorry to jump in but I think this circuit was posted in this thread a while ago. Schema attached. Can't seem to make it work right. I've built it twice thinking the first time was my bad but the second one came out really good. Anyway, all the led's flash together, in time with the music.I know I'm only using the +HV side and not the -HV side but I'm not looking for accuracy, just some moving lights and a power light to dress up a small solid state power amp I'm building. My +HV is around 25vdc. It's all hooked up to the left side of the amp. Any ideas?
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Hi everyone !
I need reference post for final version of FX14 !! with PCB if possible !
Thank you all
I need reference post for final version of FX14 !! with PCB if possible !
Thank you all
So I hooked it up to my bench supply and all the led's light at one time, except for the clip led. I know I should let it go as not working but it will really make my new amp project look good.Any ideas?
Same thing. All led's, (except clip), light up at the same time as I slowly bring up bench supply with amp out on vu connected to ground. I didn't use one of the pcb's posted but a small proto board. I've double and triple checked all connections.
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That looks like fun but I just don't need that many led's. I bought a case that had a front panel with four led's already in it, for power, data, link and message, but I thought it would look cool if they were VU type meters instead. I just can't seem to make the Apex VU work though.
Maybe you can try this, with + HV 25Vdc, it works great from Multisim 14.0 simulation.
Well I made the resistor changes and now all the led's, minus the clip, light up, with no blinking as volume comes up. From that I can see that I just need to get the resistor values right. Or mine just doesn't work. Thanks Kuntarman for the suggestion.
No need to change anything, you made some mistake.
https://www.youtube.com/watch?v=SuypbC5Ib8Q&t=74s
