Niile: Very impressive ... external PS drive several stages. Wondering how this works ... The PS appears to be able to daisy chain several devices at once. Extra filtering in each seperate stage = it would be nice to see a diagram w/ treatments for this extra filtration ... Also noticing the grounding scheme. I have kept chassis / power line grounds seperated except in the power output stages myself, isolating small signal stages from the power line shields & ground ... to reduce ground loops, etc.
Re: http://kuvablogi.com/nayta/163398/ ... Without an english explaination I'm wondering what this 'scope trace is about?? Looks like 60 Htz. modulated with 1K Htz on the speaker output ?? What is it ??
Nice ideas, nice execution ...
Re: http://kuvablogi.com/nayta/163398/ ... Without an english explaination I'm wondering what this 'scope trace is about?? Looks like 60 Htz. modulated with 1K Htz on the speaker output ?? What is it ??
Nice ideas, nice execution ...
Thankie
What do you mean with driving several stages? And daisy chain?!? The PS only contains BrianGT's basic PS board and trafo.
About the grounding issues, i agree it would be a good idea. I need to work on it.
Its an old picture of my school works (lm4780) output. It oscillated quite badly but later on i discovered i had too small gain resistor. Now it works fine.
What do you mean with driving several stages? And daisy chain?!?
The PS only contains BrianGT's basic PS board and trafo. About the grounding issues, i agree it would be a good idea. I need to work on it.
Its an old picture of my school works (lm4780) output. It oscillated quite badly but later on i discovered i had too small gain resistor. Now it works fine.
A one-sunday project: super kitchen radio
I made a unique, I hope, radio for kitchen application using following steps:
- bought an old YAMAHA hifi tuner from ebay for 15 EURO
- built in a toroidal transformer and a small LM4755 self made board
- mounted volume control switch & speaker connectors
I got an unexpectedly good sound with my Magnat Sound Force 1200 speakers! Powered by a single-ended 20 V stabilized power supply, this can be really loud for a radio - can be used for parties, too! This small IC is perfect for applications like this - where low power & simplicity are needed.
Cheers!
I made a unique, I hope, radio for kitchen application using following steps:
- bought an old YAMAHA hifi tuner from ebay for 15 EURO
- built in a toroidal transformer and a small LM4755 self made board
- mounted volume control switch & speaker connectors
I got an unexpectedly good sound with my Magnat Sound Force 1200 speakers! Powered by a single-ended 20 V stabilized power supply, this can be really loud for a radio - can be used for parties, too! This small IC is perfect for applications like this - where low power & simplicity are needed.
Cheers!
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
An externally hosted image should be here but it was not working when we last tested it.
Banned
Joined 2002
My LM4780 kit from audiosector. More pictures to come as soon as i find my camera.
Must say that the sound is great. Unfortunately I got "Humming" when I connect both rca-connectors.
Must say that the sound is great. Unfortunately I got "Humming" when I connect both rca-connectors.
An externally hosted image should be here but it was not working when we last tested it.
Here's mine. Looks better than it sounds (for now I hope)
An externally hosted image should be here but it was not working when we last tested it.
