kirakun

The caps tolerance, the cap dint stated anything.. The color is brown.. i think is 20% as search on internet. Even with this, since you are working with capacitance, you can see differences with the box open as opposed to what you see when the box is closed. i agree wif that..

The machine is used to measure the quality inside the converter. When we do troubleshoot on that machine. we will take those different quality converter to do our test.. Like my diagram got a small value capacitance 63PF, e machine will indicate the converter is 0 litre. Others capacitance values like 69PF will show 1 litre.. This is very important when doin troubleshoot on the machine. Nevermind, i had bought trimmer caps the already, caps value is from 20-120PF..

guru... help... tis sat i need get those components again :P

So i cannot juz calculate the value. If i change there will still have that unactual reading. Ur suggestion is get a trimmer cap. By parallel with those caps (show below), does it need to putting to all caps? I do a search on website, there r many types of trimmer cap value.. Which value should i get?? :-\ The shielding part can i do that?

Is there a need to ground the shield? Btw, i calculate e coaxial capacitance value. dont know correct or not.. U see, i take the reading minus the caps value that i put. The result will be the coaxial value.. Den i take the actual reading that i want minus the coaxial value, the result will be my actual cap value.. Am i right? Ex.. Actual Reading :63PF (I want the reading on that machine) Reading taken from the machine meter is 70PF (the reading i dont want) Caps that i solder is 63PF. So to calculate the coaxial cap= 70-63 =7PF To get the actual cap value = 63-7=56PF The correct caps value i should buy is 56PF, Right?

wah audioguru, u r good man.. Thx.. ;D Reducing wire.. Hmm.. i tried b4.. i juz take the caps directly connected to the machine, it give correct value. Got more info on spray capacitance? The books or websites where i can take a reference..

oic.. How 2 reduce spray capacitance?? Stray capacitance is it a virtual cap??

Hi guys, need pro help.. I doing a mini project for my job request.. becos everytime we need to install this convertor into a machine, that machine will show the amount of quality inside the converter. The measuring reading is take from the converter, where there r 2 connectors. The converter inside have 2 capacitance probes that measure the quality inside the converter. As i come out this mini project, that will act as a dummy converter. As u know, the reading is take from e converter capacitance probes. So i buy non polar ceramic caps for my project and coaxial cable for the input and output. The problem is after i finished and tested. The result not very accurate.. Y??? I buy the correct reading caps. How can it give me unacceptable reading. Ex, 63PF from my mini pro, i install it to the machine, it's give a reading of 70PF.. Wow.. That out of range.. How come?? I need ur HELP guys.. Really thankfully if you guys help me solved the problem.. Here is sche. diag i draw..