SCR is a vulnerable parts, I hope you spare parts, Power debugging may puncture SCR This situation is not a product problem, we are not responsible, I hope you understand, thank you Matching is the use of links SCR link https://www.aliexpress.com/store/product/smd-fuse-5A-2510/2956052_32807761580.html?spm=2114.12010615.0.0.iLVHsf https://www.aliexpress.com/item/smd-fuse-5A-2010/32810619019.html?spm=2114.01010208.3.1.rqS1p5&ws_ab_test=searchweb0_0,searchweb201602_4_10066_10152_10065_10151_10068_5010018_10136_10137_10157_10060_10138_10155_10062_10156_437_10154_10056_10055_10054_10059_303_100031_10099_10103_10102_10096_10147_10052_10053_10107_10050_10142_10051_5190018_10084_10083_10080_10082_10081_10110_519_10111_10112_10113_10114_10179_10183_10182_10185_10078_10079_10073_10123_142,searchweb201603_9,ppcSwitch_4&btsid=0634a184-864e-41b9-ac09-ee0c383fe30e&algo_expid=c4f6a828-a4ca-4ca8-9002-32c8915d86cd-0&algo_pvid=c4f6a828-a4ca-4ca8-9002-32c8915d86cd Switch link https://www.aliexpress.com/store/product/Foot-pedal-switch-for-EKW-5A-B-spot-welding-machine/2956052_32812522011.html?spm=2114.12010615.0.0.dMbC7x Power voltage link https://www.aliexpress.com/store/product/50pcs-lot-1300-16-audio-EI14-transformer-VOIP-telephone-transformers/2956052_32807729529.html?spm=2114.12010615.0.0.CM5hoH Foot switch https://www.aliexpress.com/item/Foot-pedal-switch-for-EKW-5A-B-spot-welding-machine/32812522011.html?spm=2114.search0104.3.1.9FOHnz&ws_ab_test=searchweb0_0,searchweb201602_5_5460015_10152_10065_10151_10068_10325_10326_5470015_10084_10083_10080_10307_10082_10081_10110_10137_10111_10060_10112_10155_10113_10114_10179_10154_10056_10055_10054_10312_10313_10059_10314_100031_10099_10078_10079_5380015_10103_10073_10102_10052_10053_10142_10107_10050_10051,searchweb201603_2,ppcSwitch_3&btsid=98a979de-1f20-4c4f-98e0-2b9464920287&algo_expid=d5db29b1-3bfe-4fbd-b984-0e5747581c28-0&algo_pvid=d5db29b1-3bfe-4fbd-b984-0e5747581c28 Spot welding pen https://www.aliexpress.com/item/Small-RS232-temperature-and-humidity-sensor-temperature-sensor-RS485-temperature-and-humidity-transmitter-MODBUS-communicatio/32811626116.html?spm=2114.search0104.3.1.QJmNSh&ws_ab_test=searchweb0_0,searchweb201602_5_5460015_10152_10065_10151_10068_10325_10326_5470015_10084_10083_10080_10307_10082_10081_10110_10137_10111_10060_10112_10155_10113_10114_10179_10154_10056_10055_10054_10312_10313_10059_10314_100031_10099_10078_10079_5380015_10103_10073_10102_10052_10053_10142_10107_10050_10051,searchweb201603_2,ppcSwitch_3&btsid=3454506c-6f75-4ff6-a34e-4a43a42bf320&algo_expid=ac89d109-f303-4fd0-9e5f-913b60852f3d-0&algo_pvid=ac89d109-f303-4fd0-9e5f-913b60852f3d This version for mass production without flying version. Package contains control panel, display panel, matching cable, red green knob. The shop has a foot pedal, welding needle, open the mouth of the copper nose, quick plug joints, heat shrinkable tubes and other accessories, power transformers, (red line input 220V, black line (Huang Xian) to the output control panel (choose to join the shopping cart to take together) Because of the ease of consumption of silicon controlled parts, easy to breakdown in the commissioning process, it is recommended that the friends together spare parts, easy to replace. Please choose your own . The control panel of the spot welding machine is a controller which is independently developed for the DIY or the simple resistance welding. The principle of silicon controlled phase shifting triggering is adopted to adjust the time and the current to achieve the purpose of welding. The main features of this controller: 1: the use of STM8 industrial microcontroller control center. 2: strong and weak electricity through optocoupler isolation, safe operation. 3: the power line and the foot switch line adopts the screw free fast connection terminal, more convenient and reliable. 4: input time, current using high-precision single potentiometer, to ensure reliable input, convenient 5: on-board power supply, state, foot, trigger indicator, working state clearly visible. 6: the design of reliable zero crossing detection circuit to ensure that the SCR phase shift accuracy. 7: the controller is compatible with 40A-100A scr. 8: digital control interface, you can display the current time and current settings. 9: time input 1-50, unit cycle (1 cycles is 20ms), current input (30-99%) If you have other needs, you can customize. Debugging pictures, we guarantee that every baby has to go through the full commissioning, can be issued to everyone. 
