| Products > Test Equipment |
| TC1 lcr-meter transistor-tester fix |
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| SA:
--- Quote from: Nokeshas on July 03, 2023, 10:20:02 am ---i have solved "tools-> make all -> pile of errors."problem with uploading msys-1.0.dll new version to winavr installation folder. Now i have fully working, with correct lcd offsets and other corrections TC1 dip atmega368p model with 1.47 M firmware since i have not been able to adopt it to 1.49 or 1.48. --- End quote --- Can you please share the hex and epp files? I also have got TC1 with atmega328p DIP. Fried the MCU. Thanks in Advance |
| galaga1982:
Thyristor measurement error? Hello? I got a lot of information from here and helped me to repair TC1 lcr-meter well. However, I have a new question. When measuring Thyristor with TC1 lcr-meter, has anyone experienced it being marked as PNP or NPN transistor instead of accurately? The Thyristor I measured was common TYN610 (ST), 5P4M (NEC). Another strange thing is that after setting DMM in diode measurement mode and connecting + probe(red) to Cathode and - Probe to Anode to check for failure, the resistance value is infinite, and when I short Gate and Anode, the current is not maintained, and it is immediately released. If it is normal, it is said that this should hold current. Is my Thyristor failure measurement method wrong? Thank you. |
| Kim Christensen:
Your Thyristor needs a minimum hold current to stay on. It also has a minimum trigger current. For the TYN610, the trigger current could be up to 15mA and the hold current up to 30mA. The DMM and TC1 probably doesn't provide enough current for that. Build a simple test circuit instead. (Adjust lamp size and R1 for your Thyristor) : |
| galaga1982:
Thank you. I briefly thought about the gate-triggering current, and I think that's right. I'll try it and let you know the result. ;) |
| algorithm:
Having had a tc1 since before this thread was started, I find the device useful often in many ways, double checking. Though everytime I reach to use it lately its dead even though it was fully charged. Sometimes in as little as 1 week. Using a usb power meter it saysitsdrawing between 18-24mA , even when dark/off. According to others posts this is in line with shorted c6/c7. Im keen to replace these, though hesitant as I dont know the correct capacitances. Anybody know what value those 2 mlccs are? Hoping I can properly fix this rather than hacking a dipswitch into the battery. Though with no battery it draws 0mA ;) |
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