the output is intended to be plotted in the freely available easy to use arduino plotter, the average human will have nil chance of interpreting the data with such a small number of samples. if your...
you cannot use a current transformer that way without a burden resistor.
by voltage sensor do you mean ACS712 or similar ?
if so that circuit is incorrect, typical use
10022
Sorry guys for not reponding earlier - I'm still waiting for 20A:50mA current sensor to arrive; my 100A:50mA are far too low and "out of range" for what I intend to measure.
Have you connected your CT as shown in your first post? That is, the bottom to 2.5V (or VRef/2) and the top to input pin AND - VERY IMPORTANT - a load resistor shown as 33ohms in diagram? You must...
Published on - 31st May 2010 18:38
Number of Views: 11782
It's almost Olympics time... so here's a topical program using PBP exclusively (no embedded Assembler) to give you a Stop-Watch with 1/100th Second Timing (yes that's 0.01 of a Second) and gives you REAL-TIME display on your LCD. Now you can do your own timing and challenge the official time...
The program demonstrates using TMR1 in BACKGROUND (multi-tasking), uses PICBasic Interrupts, and accounts for the fact that PICBasic doesn't respond to those Interrupts immediately. There's also a set-Up CALIBRATION menu item, so you can adjust and calibrate your timer to an accuracy of 360mS per Hour.
How does it do all that? Better download the PDF and find out...
Melanie
PS. Questions and Comments post on this forum/thread. No off-list mail please.
Re: YHDC current sensor - the theory please
can't tell, the picture is too blurry to read properly but i see no reference to a resistor mentioned it the bits i can read
richard Today, 10:18post a link to data sheet
edit
ps, found this so no resistance...