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Topic: See my projects
Author	Post
ATCONS 33 posts Occasional Visitor	25-11-2007 10:33 Many thanks to ELEKTOR for all !!!
Grumbleduke 67 posts Frequent Visitor	26-11-2007 15:37 So what's that kit you've built there? GD
FliQuE 1 post Popping In	27-11-2007 07:27 Hmmm... can i know wat is name of this project??? Hehehe...
ATCONS 33 posts Occasional Visitor	05-01-2008 10:23 o.k hi-fi preamp.may 2004 LFA- 150 NOVEMBER 1989!!! C-MOS PREAM.NOVEMBER 1989!!!
johnnett 3 posts Popping In	06-01-2008 10:58 ATCONS - Thanks very much for the information. The first photo I had been able to quickly identify from the very distinctive Talema mains transformers as featured on the front cover of the 2004 April issue. But the other two had me completely stumped. I didn't think to search as far back as 1988. So thanks again. To recap for anyone still having difficulty finding the particular Elektor issues concerned: Digitally Controlled High-End Preamp (2004 April & May issues) LFA-150:A Fast Power Amplifier (1988 Nov & Dec issues) A-Solid-State-Preamplifier (1989 Dec & 1990 Jan issues)
MFFF2 1 post Popping In	27-03-2008 15:23 I just built the same Highend preamp but there's something wrong! I'm not sure if the microchip isn't programmed correctly or what. Led doesn't light up and only thing I get to light up is the 16 blocks on first line of the LCD if I turn the contrast pot. No backlight even. I get the 5V right on all the measuring points, but for example the LCD backlight pin (pin16) and the led's other pin are about +1,2V (the other is +5V). Should they be minus something or 0? Or does this mean that the microcontroller doesn't work right? Those points are under its control in some way... What should I do? I thought I could build a simple programmer board and try to program the chip myself but if it still doesn't work I really don't know what to do. I guess I just have to order another pic18f452 that is preprogrammed?
hadihf 24 posts Occasional Visitor	02-08-2008 18:24 Hi ATCONS, Is it OK to use 5VA Transformers instead of 10VA as shown in article? Thanks and Regards Farooq

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