Summary of EEZ H24005, Two-Channel Programmable Power Supply
Envox Experimental Zone presents the EEZ H24005, a modular, reliable, open-source two-channel programmable bench power supply designed for DIY assembly and educational use. It comprises four PCBs and mostly SMT components, requires common soldering tools plus a hot air station for two ICs, and emphasizes stability against oscillations during power transitions and load changes. The design supports battery charging, breadboard powering, and experimentation while prioritizing openness and long-term reliability.
Parts used in the EEZ H24005:
- Four PCBs (project main boards)
- SMT electronic components (various resistors, capacitors, diodes, etc.)
- Two ICs with exposed power tabs requiring hot air soldering
- Power resistors (some through-hole power resistors)
- AC/DC adapter
- Power regulators
- Solder wire 0.25 mm
- Solder wire 0.7 mm
- Solder paste (optional, for ICs with exposed power tabs)
- Solder wick / desoldering braid
- Flux
- Isopropyl alcohol and wipes
- PCB holder
- Soldering iron with conical sloped tip
- Hot air soldering station
- Magnifying glass with light
- Self-locking tweezers
- Set of tweezers
Envox Experimental Zone (EEZ) is an open hardware and open source development website, that creates and shares various open source hardware and software projects using as much as possible open-source tools and technologies.
One of their projects is the programmable bench power supply ‘EEZ H24005’. The goal is to make a reliable, modular, open and programmable power supply, that can be used for various tasks starting with powering breadboard, charge batteries of various types, or to be used as an educational tool and science experiments.
The EEZ H24005 is a DIY power supply unit consists of four PCBs and SMT electronics components except some power resistor, AC/DC adapter, and power regulators. Only two ICs need hot air soldering station to mount, while the remaining parts can be simply mounted with soldering iron.
To build this PSU you will need these tools:
- Soldering iron with conical sloped tip
- Hot air soldering station
- Solder wire 0.25 mm, and 0.7 mm (optionally solder paste, for ICs with exposed power tabs)
- Solder wick / desoldering braid
- Flux
- Magnifying glass with light
- Self-locking tweezers
- Set of tweezers
- Isopropyl alcohol example and paper wipes for cleaning
- PCB holder
In addition to modularity, programmability, openness, and DIY, reliability was one of the key features and design guidelines of the designing process. Because as a sourcing device, the PSU has to be designed in the way that no dangerous oscillation in voltage or current is present over the long period of deployment. That includes border case of turning the PSU on and off, applying or disconnecting load, etc.
Read more: EEZ H24005, Two-Channel Programmable Power Supply
- What is the EEZ H24005?
The EEZ H24005 is a two-channel programmable bench power supply project that is modular, open-source, and intended for DIY assembly and education. - How many PCBs does the EEZ H24005 use?
The PSU consists of four PCBs. - Do I need special tools to build the EEZ H24005?
You need a soldering iron, a hot air soldering station (for two ICs), solder wire, and common assembly tools listed in the article. - Are most components SMT or through-hole?
Most components are SMT, with some through-hole parts like power resistors and certain power regulators. - Why was reliability emphasized in the design?
Reliability was emphasized to prevent dangerous oscillations in voltage or current during long-term deployment, including power on/off and load changes. - Can the EEZ H24005 be used for battery charging?
Yes, the PSU can be used to charge batteries of various types according to the article. - Is the EEZ H24005 open hardware and open source?
Yes, it is an open hardware and open source development project using open-source tools and technologies where possible. - How many ICs require hot air soldering?
Only two ICs require a hot air soldering station to mount.
