In brief: Based on review measurements: Test current: RK8009 (9 A vs. 1); Efficiency: RK8009 (98.9 % vs. 71).
Model RK8009 Riden · 2026 Read review → Converter with КРЕНка and MJD117 2014 Read review → Test current, A 9 1 Efficiency, % 98.9 71 Review conclusion Recommended With reservations
Only in one review: Voltage 80 V (RK8009); Current 9 A (RK8009); Power 720 W (RK8009); Under load 81 V (RK8009); Ripple 50 mV (RK8009).
RK8009: The converter showed low ripple, high efficiency and good thermal performance; its main drawback is limited input-voltage headroom.
Converter with КРЕНка and MJD117: The homemade buck converter reached about 71% efficiency at 0.5 A and 69% at 1 A.
Figures were taken from the review text and checked against the quoted passages. Measurement conditions differ between reviews, so read the reviews yourself before buying. Prices at the time of review.
Compare two models Category… Power supplies Converters Chargers Batteries Battery packs and power banks Electronic loads Measuring instruments Tools Model… 0–30 V, 0–7.5 A converter board 5 V 8 A voltage converter with four USB outputs 5 V UPS 12 V UPS, 12 W version 12-transistor power board 20A Buck Converter 25A 600W voltage converter 35 V 5 A Linear Adjustable Power Supply Kit 60 V 20 A linear adjustable power supply kit Adjustable power supply kit board Adjustable power supply kit board Boost converter up to 400 W Converter control board Converter with КРЕНка and MJD117 DC-DC converter board, 0–30 V, 0–8 A DC-DC converter with display DC-DC converter with QC 3.0 DC-DC Step Down module rated at 10 amps Digital PWM speed controller for a brushed motor DPH5005 DPS-5020 DPS8005 DPS8005 DPX6012S ETA3000 inductive balancer, 2–4S ETA3000 inductive balancer, up to 10S Fnirsi DC-6006L FR9888 G1208-20013120A Gandf 50 V 10 A digital linear PSU board HDMI-VGA converter IP6518 board Large Step-Up board modified into a SEPIC Lineage power SW001A2B91Z LM2596 DC-DC converter board LM2596S buck DC-DC converter LTC3780-based converter Martek power, 48 V → ±12 V, 630 mA MC34063 Modern converter MP2225 converter MP2359DJ MT3608 Multichannel DC-DC converter Multichannel DC-DC converter Pico PSU ATX Power module for a 30 V 10 A linear power supply PSU-UPS adapter board (new version) PT4115 driver Pure sine wave inverter (actually, square wave) QBW018A0B Quick Charge voltage converter RBQ-8,2/45 RBQ-31251 RD6006 RD6006 (W) RD6006-Max RD6012(W) RD6012H RD6012P(W) RD6018 RD6018P RD6024 RD6030 RK6006 RK6006 RK6006H RK6012 RK6018 RK8009 ROAL Electronics mod 223 (5 V) ROAL Electronics mod 223E (12 V) RuiDeng RD6006P RuiDeng RD6012P Sanmim 40 W 12 V power supply SGM6130 Small Step-Up board modified into a SEPIC Small Step-Up boards (5 V) SW3516 board (marking erased) TPS40057-based converter TRI1461 Two-port QC converter Tyco ME005BK Universal USB-powered voltage converter Universal voltage converter UPS-1228-12 USB-rs232 ttl converter USB 3.0 external HDD enclosure USB DC-DC board, type one USB DC-DC board, type two USR Ethernet-UART module WZ5005 XH-M403 XL4016E1 buck converter, up to 12 A XY6020L XYH3606 XYS3580 ZC822 ZC823 ZC826 ZXY6005S ZXY6020S or Model… 0–30 V, 0–7.5 A converter board 5 V 8 A voltage converter with four USB outputs 5 V UPS 12 V UPS, 12 W version 12-transistor power board 20A Buck Converter 25A 600W voltage converter 35 V 5 A Linear Adjustable Power Supply Kit 60 V 20 A linear adjustable power supply kit Adjustable power supply kit board Adjustable power supply kit board Boost converter up to 400 W Converter control board Converter with КРЕНка and MJD117 DC-DC converter board, 0–30 V, 0–8 A DC-DC converter with display DC-DC converter with QC 3.0 DC-DC Step Down module rated at 10 amps Digital PWM speed controller for a brushed motor DPH5005 DPS-5020 DPS8005 DPS8005 DPX6012S ETA3000 inductive balancer, 2–4S ETA3000 inductive balancer, up to 10S Fnirsi DC-6006L FR9888 G1208-20013120A Gandf 50 V 10 A digital linear PSU board HDMI-VGA converter IP6518 board Large Step-Up board modified into a SEPIC Lineage power SW001A2B91Z LM2596 DC-DC converter board LM2596S buck DC-DC converter LTC3780-based converter Martek power, 48 V → ±12 V, 630 mA MC34063 Modern converter MP2225 converter MP2359DJ MT3608 Multichannel DC-DC converter Multichannel DC-DC converter Pico PSU ATX Power module for a 30 V 10 A linear power supply PSU-UPS adapter board (new version) PT4115 driver Pure sine wave inverter (actually, square wave) QBW018A0B Quick Charge voltage converter RBQ-8,2/45 RBQ-31251 RD6006 RD6006 (W) RD6006-Max RD6012(W) RD6012H RD6012P(W) RD6018 RD6018P RD6024 RD6030 RK6006 RK6006 RK6006H RK6012 RK6018 RK8009 ROAL Electronics mod 223 (5 V) ROAL Electronics mod 223E (12 V) RuiDeng RD6006P RuiDeng RD6012P Sanmim 40 W 12 V power supply SGM6130 Small Step-Up board modified into a SEPIC Small Step-Up boards (5 V) SW3516 board (marking erased) TPS40057-based converter TRI1461 Two-port QC converter Tyco ME005BK Universal USB-powered voltage converter Universal voltage converter UPS-1228-12 USB-rs232 ttl converter USB 3.0 external HDD enclosure USB DC-DC board, type one USB DC-DC board, type two USR Ethernet-UART module WZ5005 XH-M403 XL4016E1 buck converter, up to 12 A XY6020L XYH3606 XYS3580 ZC822 ZC823 ZC826 ZXY6005S ZXY6020S Compare
Similar comparisons ← All: converters
RK8009Riden · 2026Read review →
Converter with КРЕНка and MJD1172014Read review →