newdvmagic3v14f1 OR magic3 OR ice can damage my lazer ?

andreyka · 11-02-2003,06:24 AM

newdvmagic3v14f1 OR magic3 OR ice can damage my lazer ?

its true or no ?

thanks !

**Robot** · 11-02-2003,09:31 AM

IF done properly NO

andreyka · 11-02-2003,10:16 AM

what mean DONE PROPETLY ?
wires or chip sw ?

**Robot** · 11-02-2003,10:42 AM

wires and resonator and caps and resistors

andreyka · 11-02-2003,11:36 AM

ok
what kind of wires, resonator,caps and resistor i must use ?

**Robot** · 11-02-2003,03:04 PM

I use murata 50 mhz resonator. 15 k resistor on reset line . 1uf cap between +5v and GND and 1uf cap between Z and GND

**Emanuel** · 11-02-2003,03:58 PM

I have used Murata resonator in parallel with a 15K resistor, a 1uF cap between Vcc and GND and a 100nF cap between Z and GND. Now I use a 5V, 50 MHz SMD oscillator and of course the two capacitors. I had no stability problems with these two setups.

The only problems have appeared when I used the internal 54MHz clock and the transistor. This combination wasn't too stable due to the variation of the hfe factor of the transistor with temperature (and thus having a fill factor different from 50% at the clock input). I had two consoles fail with burned lens, both having chips with this type of oscillator. I don't blame it entierly on the chips, because those consoles were always playing bad quality CD's.

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