Compare plating rectifiers
Aldonex alternative: compare rectifiers by what matters after installation
Aldonex has built power supplies for metal finishing and related industrial processes since 1967, with a catalog that spans basic SCR units to switch mode systems and an in-house repair and rebuild shop. ION Rectifiers is focused specifically on plating and anodizing, with rectifiers that are easy to run, filter ripple properly inside the unit, and mount right at your line. If you are weighing an Aldonex alternative, the fair comparison is not just amps and volts. It is how the unit behaves on your shop floor every shift, and how it is supported after it is running.
Compare what matters on a finishing floor
Amps and volts are the starting point. For a plating or anodizing shop, the fit is decided by how easily operators run the unit, how it controls ripple, whether it can live at the line, and how it is supported after installation.
| Buying criterion | ION Rectifiers | Aldonex |
|---|---|---|
| Focus | Plating and anodizing, purpose-built | Metal finishing plus a broader industrial power supply catalog (SCR, switch mode, tap switch, variable transformer) |
| Ease of use | Intuitive 7-inch touchscreen with recipes and thickness programs, standard on every unit | Analog meters and pushbuttons standard; digital meters and an “EZ” touchpad controller are optional upgrades, not standard |
| Programmability | Deep programming under a simple interface, standard | Programmable on switch mode and EZ Controller models; confirm depth on the specific model quoted |
| Ripple control | Standard 2% or better across the line, from a properly sized internal inductor and capacitor | 5% at full load on SCR, tap switch, and variable transformer lines; 3% on switch mode (Aldonex states most models under 1%); confirm which line you are quoted |
| Placement and footprint | Corrosion-proof IP65; mounts at or near the line, no controlled room, short bus runs | Standard enclosures are NEMA 1, 2, or 3R (air-cooled models); confirm footprint and cooling for your line |
| Enclosure | IP65 molded fiberglass or polycarbonate, NEMA 4, 4X, 12, 13, standard across the line | NEMA 4 standard on water-cooled models; NEMA 4X available as a custom option, not standard |
| Serviceability | On-site repair by an ION field technician in most cases, avoiding removal and shipping the unit back to a factory | In-house repair, rebuild, and transformer rewind shop that also services other brands, plus worldwide field service; ask whether your issue is handled on-site or shipped in |
| Certifications | ION does not currently offer CE or NRTL certification; confirm your requirements with ION before ordering | Offers CE and NRTL certification as an add-on service on new and existing equipment |
| Manufacturing | American-made, engineered and built for finishing shops | American-made; family-owned since 1967, winds its own transformers in-house |
| High-speed pulse | Deep, programmable pulse when your process needs it: to 10 kHz, 1 µs timing resolution, dual pulse, pulse train, synced reverse pulse | Slow pulse (1 to 5,940 s) and fast pulse (0.05 to 600 s, switch mode only) as control options; no published frequency or microsecond detail |
| Output range | Sized for plating and anodizing: 300 to 5,000 A at 12 V in a single unit, with linking to expand further | Small benchtop SCR units up to 100 kA DC and 400 V DC on the largest tap switch and SCR systems |
Where each supplier fits
A fair read: Aldonex serves metal finishing with a wide, decades-old catalog that ranges from simple manual-control units to switch mode systems, backed by an in-house shop that repairs, rebuilds, and rewinds equipment across several rectifier brands. ION is the Aldonex alternative to weigh when a shop wants a plating and anodizing rectifier that is easy to run, filters ripple properly as a standard feature, and comes from a single modern platform.
- You need extremely high current or voltage, up to 100 kA DC on their largest tap switch and SCR systems, outside typical plating and anodizing ranges.
- You want one shop that can also repair, rebuild, or rewind equipment from other rectifier brands, not just their own.
- You need CE or NRTL certification on the unit itself as part of the purchase.
- A simple, manually controlled unit fits your process and budget, and you do not need a touchscreen interface.
- You want an intuitive touchscreen operators actually like, not analog meters and pushbuttons with digital controls as an upgrade.
- You want true low ripple as a standard spec across the line, not a rating that depends on which control tier you buy.
- You want a corrosion-proof IP65 enclosure standard on every unit, not NEMA 4X as a custom option.
- You want American-made equipment built specifically for plating and anodizing, with on-site repair by an ION field technician.
- You want high-speed pulse with published, specific timing detail for when your process is ready for it.
Why ION is a strong Aldonex alternative
Three things a plating or anodizing shop feels every shift: how the rectifier runs, how clean its power is, and where it can sit. Here is how ION is built for all three.
An ION 1000 A / 50 V rectifier with the 7-inch HMI touchscreen. Built in the United States for plating and anodizing lines: air-cooled to 250 A, water-cooled up to 5,000 A at 12 V in a single enclosure.
- Intuitive HMI
- ≤2% ripple
- IP65 at the line
- Made in USA
Recipes, amp-hour counters, and thickness programs on a 7-inch screen, standard on every unit. Easy day to day, deep when engineers need it.
A properly sized internal inductor and capacitor holds ripple to 2% or better across the line, not a spec that depends on the control tier.
Corrosion-proof molded enclosure, NEMA 4, 4X, 12, and 13, standard on every unit, built to sit at or near the tank.
Engineered and built in the United States specifically for plating and anodizing lines.
Sized for plating and anodizing, air-cooled to 250 A or water-cooled above, up to 5,000 A at 12 V in one enclosure.
Deep, programmable high-speed pulse with published microsecond detail, available when your process is ready.
An intuitive touchscreen, standard on every unit
ION runs on a 7-inch touchscreen built for the shop floor. Operators start, save, and repeat a process right from the screen, with recipes, amp-hour counters, and thickness programs standard. Aldonex's standard control package is analog meters and pushbuttons; a digital or “EZ” touchpad controller is an optional upgrade. Easy day to day, deep when engineers need it.
Clean power that does not depend on your tank
Every rectifier turns AC into DC, and that DC is never perfectly smooth on its own. ION filters the power inside the unit with a properly sized inductor and capacitor, so ripple stays at 2% or better across the standard line. Aldonex publishes 5% at full load on its SCR, tap switch, and variable transformer lines, and 3% on its switch mode line, so the tier you are quoted matters.
Standard corrosion-proof enclosure
ION's IP65 molded enclosure, rated NEMA 4, 4X, 12, and 13, is standard on every unit and mounts at or near the tank. Aldonex's standard enclosures are NEMA 1, 2, or 3R depending on cooling; NEMA 4X is available as a custom option. If the rectifier will live near acid mist, the standard rating is the one that matters.
The ION rectifier range
One family, from a 10 A bench unit to a 5,000 A production system, all sharing the same controls, enclosure, and support. Standard 12 V models shown; 24 V and straight-DC (IP21C) families are also available.
| Model | Average current | Peak current | Cooling |
|---|---|---|---|
| IP21P-010/12 | 10 A | 20 A | Air |
| IP21P-050/12 | 50 A | 100 A | Air |
| IP21P-100/12 | 100 A | 200 A | Air forced |
| IP21P-200/12 | 200 A | 400 A | Air forced |
| IP21P-300/12 | 300 A | 600 A | Water 1 L/min |
| IP21P-500/12 | 500 A | 1,000 A | Water 1.5 L/min |
| IP21P-1000/12 | 1,000 A | 2,000 A | Water 3 L/min |
| IP21P-2000/12 | 2,000 A | 4,000 A | Water 6 L/min |
| IP21P-3000/12 | 3,000 A | 6,000 A | Water 9 L/min |
| IP21P-4000/12 | 4,000 A | 8,000 A | Water 12 L/min |
| IP21P-5000/12 | 5,000 A | 10,000 A | Water 15 L/min |
Standard 12 V models (IP21P series) from the ION product line sheet. 24 V and straight-DC (IP21C) families available on request. Aldonex's SCR and tap switch systems reach higher raw current, up to 100 kA DC, on their largest custom-built systems; ION's platform is sized specifically for plating and anodizing production lines.
High-speed pulse, when you are ready
You do not need pulse to get a better plating or anodizing rectifier from ION. But when your process is ready for it, ION offers deep, programmable high-speed pulse: up to 10 kHz at full power, timing resolution down to 1 microsecond, dual pulse, pulse train, and synced reverse pulse. Aldonex lists pulse as a control option, slow pulse from 1 to 5,940 seconds and fast pulse from 0.05 to 600 seconds on switch mode models, without published frequency or microsecond timing detail.
30+years of
hands-on pulse
Josue ZazullaFounder & Chief Engineer, ION
ION's pulse platform was engineered by Josue Zazulla, recognized as one of the world's foremost experts in implementing pulse technology, with more than 30 years of on-the-ground experience putting pulse to work in real plating operations. When your process is ready for pulse, that expertise comes with the rectifier.
Buyer watch-outs
Run these checks on either supplier before you buy. They surface the differences a nameplate rating hides.
Can operators run and repeat a process from the interface, or does the standard unit rely on analog meters and pushbuttons with digital controls as an upgrade?
Is the ripple rating you were quoted the standard spec, or does it depend on which control tier or model you buy? Ask for the rating at your actual load, not just full load.
Can the unit sit at your line in its standard enclosure, or does reaching a higher NEMA rating require a custom option?
Ask exactly how repairs happen: does a technician come to your site, or does the unit need to be removed and shipped out? Get a real lead time either way.
If your plant or jurisdiction requires CE or NRTL certified equipment, confirm current certification status directly with each supplier. Do not assume either way.
Is the supplier focused on plating and anodizing, or is finishing one of several technologies and brands they build and service?
Aldonex alternative: your questions answered
Straight answers to the questions shops ask when they weigh Aldonex against ION.
Is an ION rectifier easy for operators to run?
Yes. Operators run it from an intuitive 7-inch touchscreen with saved recipes, amp-hour counters, and thickness programs, standard on every unit. Engineers still get deep programmability underneath.
How does ION control ripple compared to Aldonex?
ION filters the DC inside the unit with a properly sized inductor and capacitor, holding ripple to 2% or better as a standard spec across the line. Aldonex publishes 5% at full load on its SCR, tap switch, and variable transformer lines, and 3% on its switch mode line, so the control tier you are quoted changes the answer.
Can I install an ION rectifier next to the plating line?
Yes. ION rectifiers use a corrosion-proof IP65 enclosure, rated NEMA 4, 4X, 12, and 13 standard, designed to sit at or near the tank. Aldonex's standard enclosures are NEMA 1, 2, or 3R; NEMA 4X is available as a custom option.
Where are ION and Aldonex rectifiers made?
Both are American-made. Aldonex is a family-owned manufacturer based in Bellwood, Illinois, operating since 1967 and winding its own transformers in-house. ION rectifiers are engineered and built in the United States specifically for plating and anodizing shops.
How does ION handle repairs?
Most issues are resolved on-site by an ION field technician, which avoids removing the rectifier and shipping it back to a factory for service. Aldonex operates its own in-house repair, rebuild, and rewind shop that also services several other rectifier brands, plus worldwide field service; ask each supplier what a specific repair would require.
Does ION offer pulse plating?
Yes. ION offers deep, programmable high-speed pulse, up to 10 kHz with microsecond timing resolution, for shops that need it. A shop does not need pulse to benefit from ION's easy operation, standard low ripple, and at-line design, so pulse is there when your process is ready for it.
Does ION offer CE or NRTL certification?
No, ION does not currently offer CE or NRTL certification. If your plant or jurisdiction requires certified equipment, confirm your requirements directly with ION before ordering. Aldonex offers CE and NRTL certification as an add-on service.
Choose the rectifier that fits your finishing line
Considering an Aldonex alternative? Send your tank size, target voltage and amperage, chemistry, and process, and we will help match the right unit.
Comparison based on publicly available information as of July 2026, including Aldonex's published information and ION's published specifications. Confirm current specifications with each manufacturer. ION positioning reflects its design focus for plating and anodizing shops.