Atari ST "2in1" PSU by Electroware: a new beginning for your Atari 520ST or 260ST computer using SF314 or SF354 floppy disk drive. Efficient and reliable medical grade 55W PSU to power & preserve! Replacing two big original power supply units and offering peace of mind and saves your desk space! An add-on "Adjust & Protect" module available to enable advanced features like voltage fine tuning, ripple filtering and more protection!

Stay original! Buy only the genuine Electroware's gear and beware the fancy overrated clones flooding eBay & WWW!

PSU is including EU AC input cable by default! Please contact us or search all our eBay auctions for another cable type (UK, US, AU) as the PSU is universal and accepts 110-230VAC mains, all you need is to change the main AC cable.

ATARI PSU "2in1": SAVE DESK SPACE & ENERGY. GET THE NEW "2in1" PSU INSTEAD YOUR ATARI 520ST & SF314 PSUs.

The Atari 520ST (and 260ST) computers were originally equipped with external, big and heavy switching mode PSU. The original ~17W PSU was offering 5VDC@3A, 12VDC@0.03A & -12VDC@0.03A. The popular external FDD drive is using similar but smaller ~7W PSU offering 5VDC@0.72A and 12VDC@0.21A only. All of these PSUs have same problem nowadays: all are nearly 40 years old and not longer reliable because of capacitors degradation. Old power supply, if still working and showing acceptable voltage levels, can ba a source of killing over voltage spikes that will burn your chips due to the electrolytic capacitors "dry outs" and component's ageing. It's happening especially if PSU is working overloaded or FDD's old mechanic parts and are making more friction and resistance.

 

If your ATARI PSU is gone, not longer working, or you are not sure about it's condition - it's time to get a solid, superior quality "2in1" replacement. It's 50W (55W peak) of total combined output power: far more than two times stronger than original pair of Atari 520ST (260ST) PSU + SF415 / SF354 FDD PSU. It's three times smaller in dimensions and weight (only 0.4KG) to save your desk's space.

I believe your Atari ST is using many enchantments nowadays as fans and users are creating wonderful hardware stuff like FDD emulators (using SD Card), HDD drives with CF card, video output enhancers, VGA/HDMI RasPi adapters, WiFi serial modems, memory upgrades, accelerators etc... all to enjoy.  But remember that all of these gadgets are stressing the PSU and original one become even more dangerous when working overloaded.

 

Please notice that most of cheap PSU replacements for Atari 520ST (260ST) computers are usually missing the -12VDC voltage (used for RS-232-C serial port operations) basing on the fact that most users is never using this port, so... will never notice. Some of other popular replacements are stuffed with overrated gadgets but are missing the main On/Off switch - just to make te construction cheaper! Our philosophy is opposite: reliable PSU replacement needs to supply all three voltages (as per original specification) but offering more power on each line. The reliable, mechanical ON/OFF rocker switch is a must for computer health, overall safety and true energy saving when powered off (instead of pseudo stand-by modes).

 

UNIQUE FEATURES & QUALITY

 

THE ABSOLUTE BASICS OF MODERN ATARI 520ST (260ST) & SF314 / SF3354 FDD POWER SUPPLY

Standard Atari ST "2in1" PSU features:

• ATARI 520ST, 520ST+, 260ST, 260ST+ compatible (main output)
• ATARI SF314, SF354 compatible (secondary output)
• Stabilized & filtered 5VDC up to 4A output (4.4A peak)  
• Stabilized & filtered 12VDC up to 2A output (2.2A peak)
• Stabilized & filtered -12VDC up to 0.5A output (0.55A peak) 
• Active & passive over voltage protection for main +5VDC line
• Over current protection for all output lines
• Fully isolated & fused on AC side
• Power On/Off switch
• Long output cable (1.8m) with round DIN 7-pin female plug
• Detachable FDD power cable (you can disconnect it when not in use)
• Detachable input AC cable for all versions
• Weight only 0.4 KG (3x less than original Atari ST & SF314 PSU set)
• Runs COLD (in comparison to original PSU)!
• Safety standards: UL60950-1, TUV EN60950-1, ANSI/AAMI ES60601-1, TUV EN60601-1, IEC60601-1

 

GO BEYOND THE BASIC: BUY THE ATARI 520ST "2in1" PSU + EXTENSION MODULE

NEW Protection & Adjustment LED Module add-on to enable an advanced features:

• Trimmer for 5VDC voltage fine tuning in range: 4.9-5.3V common for both computer & FDD outputs.
• Power good status LED (green)
• Redundant, fast over voltage protection for 5VDC line
• Voltage spikes suppression with ultra-fast TVS diode
• Redundant, resettable over current protection for 5VDC line
• Additional output ripple reduction by low-ESR capacitor filtering

 

 

UNIQUE FEATURES & QUALITY

 

Stay with the original Electroware products to gain top build quality, unique features unavailable with the clone products:

• Reliable ON/OFF switch is a must for ATARI ST PSU
• "2in1" capability offering support for popular ATARI SF314/SF354 floppy disk drives
• Detachable FDD power cable (comfort of use)
• Detachable AC input cable (we deliver standard cable but you can use much longer cables if necessary).
• Hi-quality round 7-pin female plug 100% ATARI 520ST/260ST compatible
• 100% repairable, easy to disassemble by qualified technician, spare parts available.
• All electric cables terminated with the industrial grade, detachable wire-to-board connectors. There's no amateur and dangerous direct AC and DC wire-to-board soldering!

Protection LED Module add-on advanced features:

• Trimmer for 5VDC voltage fine tuning in range: 4.9-5.3V
• Power good status LED (green)
• Redundant, fast over voltage protection for 5VDC line
• Voltage spikes suppression with ultra-fast TVS diode
• Redundant, resettable over current protection for 5VDC line
• Additional output ripple reduction by low-ESR capacitor filtering

 

TRUST & RESPONSIBILITY

Every single Electroware PSU unit is triple tested before dispatch. To assure flawless quality and long lasting performance we are testing with original Atari gear from our collection as well as by burn-in test with customized load simulating devices causing 150% overload (comparing to regular ATARI 520ST/260ST computer system running with ATARI SF314 FDD).

Stay with the original Electroware products to gain top build quality, unique features unavailable with the clone products.

By purchasing this product you are supporting the retro computing community and contributing to our continuous developing process. Thank you!

 

Warning!

Risk of electrical shock and energy hazard when opened. All failures should be examined by a qualified technicians only. Risk of fire or electrical shock. The ventilation holes should be protected from foreign objects or dripping liquids. Please do not install power supplies in places with high ambient temperature or close to the heat source. Enclosed power supplies are intent to work in indoor locations, it's not allowed to use power supplies outdoor, in dust or high moisture. Output current and output wattage must not exceed the rated values.

This replacement Atari ST PSU has been designed for Atari 520ST & 260ST vintage computer systems using ATARI SF314/SF354 FDD only and should be considered as an component of Atari ST computer system. Do not connect to any other devices as it's not a general purpose PSU. Manufacturer is not responsible for any consequences of unauthorised or arbitrary repairs, modifications or incorrect usage. Please notice that new, properly working replacement Atari ST PSU is reducing the system's potential fail rate but still is not guaranteeing that entire Atari ST system will work correctly (it's ~40 years old).

 

Stay original! Buy only the genuine C64PSU.com gear and beware the fancy overrated clones flooding eBay & WWW!