« Last post by JardCrocker on November 13, 2017, 16:04:25 PM »
Hi,...i am a new user here. As per my observation you are dropping 4V between input and output, and at 0.5A that makes 2W, and that is a LOT of heat without a heatsink.At 2W without any heatsink, the die of the device will be at a whopping 155?C if your ambient temperature is 25?C, and the case will be 10?C less, but 145?C is still a nice way to burn your fingers.
« Last post by Greg on November 02, 2017, 04:36:42 AM »
I have a 3 phase motor When testing with a megger do you only test from each winding to ground. When I do a ohm meter test of the 6 wires I get a reading wirer green 1&2. 9.7ohm White 3&4. 9.7 ohm Yellow 5&6 9.7 ohm readings . This is the order in witch they wer connected to the terminal block. When I connect any black wirer or white wirer in any order I get a ohm reading between 17 and 10 ohm black to black or white to white black to white. I do not under stand this layout. Are all the wind endings going inside. The windings do not go to earth. Grer
« Last post by ma1990 on October 27, 2017, 17:15:16 PM »
Hello! I recently built a voltage divider, and tested out resistors before soldering, which were in good condition. However, when I connect my divider to the HV supply my current seems to be unstable.
The current should read 210microA, but it keeps fluctuating between 218-219 even after 10 minutes of voltage running through it. I have re-tested the resistors still connected to the board with the use of a multimeter and they all still give me their correct value. I even added extra solder support to the resistors thinking that one might be lose but I have had no luck in stabilizing it. Any suggestions?
« Last post by urameshix on October 12, 2017, 15:30:11 PM »
Good Morning all,
I have exactly the same problem. It lights up once, and then stays off all the time. I checked the voltage in the capacitor, and it's changing due to 555, but led does not light up.
I also tried to connect directly the led with a resistor to pin 3, and it blinks well.
« Last post by Dizzdogg on July 24, 2017, 03:40:36 AM »
I have a servo motor that I can't figure out how to use (I have enclosed a picture). I've had this motor for 20 plus years and I can't find any info on it, online or anywhere else (I'm new to servo motors by the way). Any and all help will be greatly appreciated.
« Last post by kam on June 17, 2017, 10:33:32 AM »
Sorry but cannot understand. I think that you mean that if you try to rotate fast the stepper stops. This is normal. Steppers have a maximum RPM that you may exceed.