Triple Output DC Power Supply Pricing
A transparent breakdown for engineering and procurement teams. Understand the structural cost differences between entry-level SMPS, industrial-grade linear supplies, and legacy brand premiums.
Market Tier Analysis
| Category | Tier 1: Entry Level | Tier 2: Industrial (eTM-DM) | Tier 3: Legacy Brands |
|---|---|---|---|
| Typical Price Range | < $250 | $400 - $900 | $1,500 - $3,000+ |
| Topology | Switching (SMPS) | Pure Linear | Pure Linear |
| Ripple & Noise | > 10 mVrms (High freq noise) | < 1 mVrms (Ultra-low) | < 1 mVrms (Ultra-low) |
| Display Resolution | 10mV / 10mA (3-digit) | 1mV / 1mA (4-digit) | 1mV / 1mA (Often requires paid unlock) |
| Build / Weight | Lightweight (< 5 lbs) | Heavy Copper Transformer (~16 lbs) | Heavy Copper Transformer (~20 lbs) |
| Procurement Assessment | High risk of engineer rejection due to switching noise affecting sensitive tests. | Maximum ROI. Delivers required R&D performance without the brand premium. | Budget drain. 40-60% of cost is brand tax. Hard to justify unless mandated by client. |
Deconstructing the BOM
Understanding the Bill of Materials (BOM) reveals exactly what you are paying for in a lab-grade power supply.
01. Heavy Copper Transformers
A true linear power supply is heavy (often 15-25 lbs). The bulk of the hardware cost goes into massive, pure copper toroidal or EI transformers. This provides the ultra-clean, noise-free power that sensitive analog circuits demand. Cheap supplies use tiny high-frequency transformers (SMPS) to cut costs, sacrificing signal purity.
02. High-Precision ADC/DACs
The difference between a 3-digit display (10mV resolution) and a 4-digit display (1mV resolution) requires significantly more expensive Analog-to-Digital and Digital-to-Analog converters. The eTM-DM series uses premium ADCs to guarantee 4-digit precision natively.
03. Thermal Management
Linear supplies dissipate excess voltage as heat. To run at full load (e.g., 30V/3A) continuously without thermal shutdown, they require massive extruded aluminum heatsinks and intelligent fan control.
Procurement Considerations
Beyond the spec sheet.
Lead Time & Availability
Legacy brands frequently suffer from 8-12 week lead times due to complex global supply chains. eTM-DM models are stocked locally and typically ship within 24-48 hours, keeping engineering schedules on track.
No Hidden "Unlock" Fees
Some major brands sell a base model cheaply, but charge $100+ software licenses to "unlock" the 4th digit of resolution or enable the LAN/RS232 ports. eTM-DM features, precision, and interfaces are fully unlocked out of the box.
Frequently Asked Questions
Common procurement inquiries.
Do you accept Purchase Orders (Net 30 terms)?
Yes. We routinely accept POs with Net 30 terms from accredited universities, government laboratories, and established corporate accounts. Contact our sales team to set up an account.
Do the power supplies come with calibration certificates?
All eTM-DM series power supplies are strictly factory-calibrated before shipment. If your compliance department requires formal NIST-traceable calibration certificates, they can be provided upon request.
What is the warranty period?
We stand behind our industrial-grade build quality with a standard 1-year warranty covering parts and labor, backed by lifetime technical support.
Are there any recurring software fees or license keys?
No. Unlike legacy brands that charge to 'unlock' features, every eTM-DM unit comes with all features (4-digit resolution, LAN/USB/RS232 interfaces, SCPI programming) permanently unlocked out of the box.