On eBay Now...

When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Here for sale is GREATCOOL 12V Variable-Speed Miniature Refrigeration Compressor Kit.
This kit combines a hermetic 12V DC rotary compressor, a dedicated variable-speed compressor driver, and a programmable compressor control board for building compact custom refrigeration and cooling systems.
Compressor performance depends on operating speed and refrigeration system conditions. The published cooling-capacity, input-power and COP values are manufacturer test results under specified test conditions. Actual performance will vary with condenser temperature, evaporator temperature, airflow, expansion device, refrigerant charge and overall system design.
· Custom miniature refrigeration systems
· Compact DC cooling equipment
· DIY refrigeration and thermal-management projects
· Portable or specialized cooling systems
· Engineering prototypes and experimental refrigeration systems
· This listing is for the core components of a custom refrigeration system. It is not a complete plug-and-play refrigeration appliance.
· A complete refrigeration system may also require an evaporator, condenser, expansion device or capillary tube, refrigerant tubing, refrigerant charge, power supply, fans, fittings and other components appropriate to the application.
· The compressor and driver are designed to work as a matched set. Do not substitute an incompatible compressor or driver without verifying electrical and communication compatibility.
· The compressor driver uses TTL-level UART communication. It is not an RS-232 interface.
· The compressor driver requires an appropriate DC power supply capable of supplying the required current.
· Follow the wiring, operating limits, protection requirements and installation instructions in the supplied technical documentation.
· Performance specifications are test results under specified conditions and are not guaranteed values for every refrigeration system.
About the ZH2012A Compressor:The ZH2012A compressor is a DC 12V hermetic rotary refrigeration compressor designed for compact cooling systems. Featuring a brushless DC (BLDC) motor and R134a refrigerant, it delivers up to 300W of cooling capacity in a palm-sized, lightweight package — ideal for DIY cooling projects, portable fridges, and solar-powered refrigeration units.
Pls attention that the compressor here is a refrigeration compressor for R134a refrigerant, NOT an air compressor for pumping air.
Compressor Specifications:
·Model: ZH2012A
·Brand: Greatcool
·Product Name: Hermetic Rotary Refrigeration Compressor
·Compressor Type: Hermetic rotary compressor
·Motor Type: Brushless DC motor
·Refrigerant: R134a
·Rated Voltage: DC 12V
·Input Power: 85W (Nominal), Max 100~135W
·Cooling Capacity: 245W (Nominal), Max 300W
·Speed Range: 1800–4800 RPM(variable speed)
·Maximum Current: 16 A
·Displacement: 1.9 cm³/rev
·Lubricant / Oil Charge: POE 68 / 40mL
·Cooling Method: Forced-air cooling
·Noise: 48-55dB
·Weight: 700~725g
Working Temperature Range:
·Evaporating Temperature: -18℃ ~ +24℃
·Condensing Temperature: 27℃ ~ 71℃
·Ambient Operating Temperature: -30℃ ~ +60℃
Notes:
Cooling capacity varies with rotating speed. Nominal cooling is 245W, peak cooling capacity is up to 300W at high speed.
Compressor Driver
· Model: GP1212C
· Rated input: 12 VDC
· Input voltage range: 8–16 VDC
· Maximum input current: 17 A
· Maximum input power: 180 W
· Speed range: 1,800–4,800 RPM
· Control method: Sinusoidal vector control
· Efficiency: >90%
· Control interface: Isolated TTL-level UART communication
· Protection: Overvoltage, software/hardware overcurrent, overtemperature, stall and phase-loss protection
· Fault recovery: Automatic restart approximately 3 minutes after a fault
Compressor Control Board
· Model: GE2206-CPCtl
· Supply voltage: 8–48 VDC (55 V maximum)
· Display: 4-digit 7-segment display
· Controls: 4 function buttons
· Temperature inputs: TP1 and TP2 NTC sensor inputs
· Outputs: 3 low-side MOSFET outputs for pump/fan loads
· Control functions: PID temperature control and manual compressor speed control
· Communication: Dual serial interfaces
· Driver parameter configuration supported

BLDC 12V DC Mini R134a Brushless Refrigeration Compressor W/ Driver Control Kits
$249.99
12V DC Mini R134a Brushless Refrigeration Compressor BLDC FOC Driver Control Kit
$149.99
12V DC 16A ZH2012A Mini R134a BLDC Refrigeration Compressor FOC Lab Cooling DIY
$149.99
![]()
Popular Tutorials
Alarms and Indicator Circuit diagrams