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Hello all, I am working on a project where I need to make an ajustable PWM Curve over time... Any ideas on calculating/ creating a fully adustable ramp ( 10 bit range ) in assembly?
Finally had a chance to get the scope fixed, thank you for all youre help/ hints BradtheRad... What it ended up being is a comparator IC, U1001 -( LM324 ), it is part of the intensity circut that goes in-between the A INTEN, B INTEN, READOUT pot's & the rest of the Z-Axis Driver's... Thanks...
Checked sweep circuit, all voltages seem to be okay, I performed a self diagnose and the test halts for a fail at SR 3- Wrote: 5555 Read: FFFF, I found in the service manual the SR3 is testing the 2 shift-registers that are on the Front Panel Switch Board. The 2 registers are Parallel in, serial...
Thanks for replying so fast Brad, I don't think I have a HV problem because even after the trace(s) dim out you can still bring up menus on the crt with no problems... No HV arcing is heard, the problem happens when you power the unit on the trace will slowly get dimmer and dimmer within 1-2min...
Hello all, I have a Tektronix 2246 that has a problem showing traces... When you first power the unit up you can see a trace as long as you have the time base set at .5s/div or more, as the scope heats up the trace slowly gets dimmer to the point that you cant see it at all... You can see all of...
Hello, Im wondering if their is a way to preload EEPROM Values? Do I need to load the values in the assembler or in the code itself? Im programming in assembly using MPLAB... Any help would be great! -Ryan
---------- Post added at 06:00 ---------- Previous post was at 04:41 ----------...
I also seem to remember a few months ago, I was working on a project using serial comm and I made up the circuit on the ol' bread-board and I forgot to use the caps on the xtal... I was having the similar problems that you have.... so, try the caps and let us know..........
Yeah I know the last post stated to use the caps, but, for some reason the original poster refuses to use the caps because he thinks they are for no reason.... I strongly recomend to use the 22pF caps! you are dealing with data communications that require some what accurate timing... If you have...
frequency generation using microcntroller
Hello, I just went through making the same project... A good book I used is called timin' and countin' by square 1 electronics they have a really good section about using the ccp ( capture/compare ) module... Its really easy to use and it wont tie up...
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