--- title: Electrical power and electronics (voltage regulator wiring, power supply trimming, diode module checks, cable care and REX-C100 reset) — AM training/support how-to videos source_url: - /data/amcoza/sources/youtube/channel-tools.md - https://www.youtube.com/watch?v=RHCXCDEf9-g - https://www.youtube.com/watch?v=-7AivXFg6V8 - https://www.youtube.com/watch?v=0dMKnwyt5N4 - https://www.youtube.com/watch?v=pgZJR9J0J5A - https://www.youtube.com/watch?v=_RMsCp36jE0 - https://www.youtube.com/watch?v=V3eyphSy1Sw - https://www.youtube.com/watch?v=xLa7P_BmVCw fetched_at: 2026-10-18T15:07:00Z category: electrical pass: electrical-power-youtube-howtos-index refreshed_from: youtube.jsonl dump 2026-10-18 00:25 SAST, buythis.jsonl dump and am.im product JSON (no crawl) --- # Electrical power and electronics how-to videos (AM training / support) **Product:** AM.CO.ZA **power and electronics parts** used around AM machines: AG-VOLTAGE servo voltage regulators (AVR) and their circuit breakers, power supply trimmer potentiometers, bridge rectifier diode modules for IGBT plasma cutters, cable terminations, and the REX-C100 temperature controller used on roller heat presses and DTF powder shakers. This index collects 7 videos from the AM tools channel that were not yet listed in another AM how-to index. Other C100 videos are in the [heat press how-to index](heat-press-howtos.md) and another diode module check is in the [CNC plasma cutting how-to index](plasma-cutting-howtos.md). Deduplicated by watch ID across all AM how-to index pages (channel indexes alone do not count as how-to coverage). **Source:** local AM YouTube dump `youtube.jsonl` (tools channel; refreshed 2026-10-18 00:25 SAST). First written 2026-10-18 17:07 SAST with 7 videos. **YouTube was not crawled.** Titles and watch URLs below are taken from the dump as written. Videos were **not** watched. Where the dump has a usable spoken transcript, the summary is paraphrased from it only. Videos without a transcript (or with an unreadable one) are listed by title only. Nothing was invented to fill gaps. ## English dump titles (7 unique watch URLs) Grouped by topic and sorted by date. AM-channel uploads are framed as **AM training/support sources**. Each watch URL is a source. ### Voltage regulators (AVR): connecting the AG-VOLTAGE 3 kVA and 40 kVA stabilisers How to connect AM's AG-VOLTAGE servo voltage regulators between the mains supply and a machine. The 3 kVA single-phase video has no transcript in the dump, so only its title is listed; the am.im product JSON for AG-VOLTAGE/3KVA lists it as the installation video. The 40 kVA three-phase video has a short transcript. Paraphrased: the supply goes into the top of the circuit breaker, which is its input; the bottom of the breaker is its output; and the output side then goes out to your device. The transcript is brief and partly unclear, so follow the regulator's wiring label or manual, and have a qualified electrician do three-phase connections. | Date | Title (from dump) | Watch URL (source) | | --- | --- | --- | | 2024-03-05 | How to Connect AG-VOLTAGE/3KVA Voltage Regulator to Provide Stable 220V AC Power | https://www.youtube.com/watch?v=RHCXCDEf9-g | | 2024-07-15 | Wiring Method for AG-VOLTAGE/40KVA 3-Phase 380V A Fully-Automatic Voltage Regulator (AVR) | https://www.youtube.com/watch?v=-7AivXFg6V8 | ### Power supply and electronics checks: trimming a switch-mode supply and testing a bridge rectifier module Two bench checks on power electronics. - **Adjusting a switch-mode power supply output (2023, paraphrased from the dump transcript):** first measure the output with a multimeter. The supply in the video reads a little high at about 15 V. Turn the small adjustment trimmer on the supply with a screwdriver until the reading is right. Under load you may set it slightly higher, but by no more than about one percent. - **Checking a bridge rectifier fast diode module (2025):** no transcript in the dump. The title says the module is checked by measuring the diode voltage drop with a multimeter. | Date | Title (from dump) | Watch URL (source) | | --- | --- | --- | | 2023-08-30 | How to Change Voltage Using a Potentiometer | https://www.youtube.com/watch?v=0dMKnwyt5N4 | | 2025-06-21 | Check If Bridge Rectifier Fast Diode Module Working by Diode Voltage Drop Use Multimeter | https://www.youtube.com/watch?v=pgZJR9J0J5A | ### Cables and wire terminations: star crimping and protecting direct-to-board cables Two videos on keeping cables and wires connected. - **Star crimping pliers for threaded wire (2025):** the dump transcript is not readable English, so only the title is listed: using star crimping pliers to terminate threaded wire for signal or power connections. - **Preventing damage to direct-to-board cables (2025, paraphrased from the dump transcript):** many machines, for example A3 DTF printers, UV DTF printers and many vinyl cutters, have cables such as USB and network that plug straight into the mainboard. A cable pulled at an angle damages the port, and a network plug's hook means any pull can break it; this damage is very hard or impossible to fix. AM's method is to bend the cable through about three turns so it is hard to pull out, and to fix it with cable ties set across the cable's natural direction so a pull is stopped before it reaches the port. Bright yellow tape makes it easy to see when a cable has come out. Customers can ask AM for the stickers and cable ties. | Date | Title (from dump) | Watch URL (source) | | --- | --- | --- | | 2025-02-25 | Damage Prevention for Direct to Board Cable Connection | https://www.youtube.com/watch?v=_RMsCp36jE0 | | 2025-05-11 | Use Star Crimping Plier Terminate Threaded Wire for Signal/Power Connection | https://www.youtube.com/watch?v=V3eyphSy1Sw | ### REX-C100 temperature controller: settings, lock levels and factory reset How to change settings on the REX-C100 temperature controller and return it to factory defaults (2025, paraphrased from the dump transcript; the presenter says the manual is on cncu.co.za): - **Target temperature:** press SET, change the digits (the shift key moves between digits for faster changes) and press SET again. With no sensor connected the display shows out of range. - **Other settings:** press and hold SET to step through the settings (for example A1, the first alarm). Change a value and press SET; the list loops back to A1. Read the manual for what each code means. - **Lock levels (LCK):** the lock setting controls which values can be changed. The presenter says setting LCK to 1000 opens a hidden level that the manual does not mention. - **Code (guard) mode:** after setting LCK, wait for the display to time out, then press and hold SET together with the shift (left) key for about three seconds to enter the code screen. Code 0000 opens one group of settings and 0001 another, for example SH, the upper limit of the setting range. - **Factory reset:** there is no single reset button. Look up the factory default for every setting in the manual and change each one back to that value. Settings and codes can differ between controller versions; check the manual for your unit before changing protected values. | Date | Title (from dump) | Watch URL (source) | | --- | --- | --- | | 2025-10-04 | Rex C100 TempController Reset Factory Default Value (Relay, LCK, Cod, God Mode) & User Manual | https://www.youtube.com/watch?v=xLa7P_BmVCw | ## Related SKUs (Buythis dump and am.im product JSON only; no prices, no stock) Product names come from the Buythis product dump (`buythis.jsonl`; **not crawled**) and am.im product JSON. Prices and stock are not stored on this index. Only some videos name an exact SKU, so the other rows are current AM SKUs that match the parts shown or named in the video titles. Check each product page for ratings and what is included before quoting. | SKU | Product | Dump link | AM KB page | Why it is here | | --- | --- | --- | --- | --- | | AG-VOLTAGE/3KVA | 3kVA 220V AC High-Precision Fully Automatic Servo Stabilizer, Variac Voltage Regulator (AVR), Input 220V(±20%) SVC(TND)-3000VA (Not a UPS, No Power Cable Included) | https://buythis.co.za/ag-voltage-3kva#ai | [AG-VOLTAGE/3KVA](../products/ag-voltage-3kva.md) | 3 kVA single-phase 220 V servo voltage regulator; its am.im product JSON lists the connection video in this index as its installation video | | AG-VOLTAGE/50KVA | 50kVA 3-Phase 380V AC High-Precision ≤±4% Fully-Automatic Servo Stabilizer, Variac Voltage Regulator (AVR), Input 380V(±20%) WFSBW-H-50KVA (Not a UPS) Use 12mm² Cable 100A Breaker | https://buythis.co.za/ag-voltage-50kva#ai | [AG-VOLTAGE/50KVA](../products/ag-voltage-50kva.md) | 50 kVA three-phase 380 V servo voltage regulator; the 40 kVA model named in the wiring video is marked phased out on am.im and is not in the Buythis dump, so this is the nearest current three-phase AVR | | AE-BREAKER/D80A | DZ47-125 Circuit Breaker with Shunt Release Unit, 400V Three Phase 80A Circuit Breaker for 40kVA Voltage Regulator | https://buythis.co.za/ae-breaker-d80a#ai | [AE-BREAKER/D80A](../products/ae-breaker-d80a.md) | three-phase 80 A circuit breaker with shunt release sold for the 40 kVA voltage regulator, the breaker stage described in the 40 kVA wiring video | | AEC-AP/3296/X202 | Adjustable Potentiometer 3296-X202, Side Adjust Through Hole Trimmer Resistor for Laser Power Supply | https://buythis.co.za/aec-ap-3296-x202#ai | [AEC-AP/3296/X202](../products/aec-ap-3296-x202.md) | side-adjust trimmer potentiometer for laser power supplies, the same kind of small screwdriver-adjusted trimmer used in the power supply voltage video | | AE-DIODE/BRIDGE/100/3 | 1600V 100A Three Phase Bridge Rectifier Fast Diode Module for IGBT Plasma Cutter, Apply Industrial Thermal Paste When Install (Not Included) | https://buythis.co.za/ae-diode-bridge-100-3#ai | [AE-DIODE/BRIDGE/100/3](../products/ae-diode-bridge-100-3.md) | three-phase bridge rectifier fast diode module for IGBT plasma cutters, the module type named in the diode voltage drop test video | | AE-DIODE/BRIDGE/100 | 600V 100A Single Phase Bridge Rectifier Fast Diode Module for 65A IGBT Plasma Cutter (~400 Diode Voltage Drop), Apply Industrial Thermal Paste When Install (Not Included) | https://buythis.co.za/ae-diode-bridge-100#ai | [AE-DIODE/BRIDGE/100](../products/ae-diode-bridge-100.md) | single-phase bridge rectifier fast diode module for 65 A IGBT plasma cutters; its product name gives the expected diode voltage drop reading | | H-CONTROL/C100 | Temperature (0~400°C) Controller for Roller Heat Press with Relay Output, 220V, REX-C100 (Relay, M*AN) | https://buythis.co.za/h-control-c100#ai | [H-CONTROL/C100](../products/h-control-c100.md) | REX-C100 relay-output temperature controller for roller heat presses; its am.im product JSON lists the factory reset video in this index | | H-DTF/C100 | Temperature (0~400°C) C100 Controller for DTF Powder Shaker with SSR Output, 220V, REX-C100 (SSR, V*DN) | https://buythis.co.za/h-dtf-c100#ai | [H-DTF/C100](../products/h-dtf-c100.md) | REX-C100 SSR-output temperature controller for DTF powder shakers, the same controller family as the reset video | ## Related AM how-to indexes - [Heat press how-to videos (includes other C100 controller videos)](heat-press-howtos.md) - [CNC plasma cutting how-to videos (includes a diode module check)](plasma-cutting-howtos.md) - [Compressed air, nitrogen and laser cooling how-to videos](compressed-air-cooling-howtos.md) - [DTF textile printer how-to videos](dtf-howtos.md) - [UV-DTF printer how-to videos](uvdtf-howtos.md) - [Vinyl cutter how-to videos](vinyl-cutter-howtos.md) - [Tools channel index](channel-tools.md) ## Notes - Matching: tools-channel dump titles about mains power, power supplies, diode modules, cable terminations and temperature controllers, minus any video already in another AM how-to index page. Channel indexes listing the same watch URL do not count as how-to coverage. - Mains and three-phase wiring is dangerous. These summaries are not wiring instructions; follow the product manual and use a qualified electrician. - Older videos may show earlier hardware versions; quote current specifications from the product page. - Live stock is never stored here; check the live stock feed for availability.