Very practical circuit, low price. Can be used as universal power supply, thanks to constant voltage and constant current mode. Measured values are at Vout 12V / 2A. Minimum input-output voltage difference : 3V , output ripple: 400mVss, ripple frequency : looks more like 195kHz than 300Hz. Output residual frequency spectrum: up to 2.5MHz. (as usual with SPS, so not recommended for radio amateurs equipment)

Very practical circuit, low price. Can be used as universal power supply, thanks to constant voltage and constant current mode. Measured values are at Vout 12V / 2A. Minimum input-output voltage difference : 3V , output ripple: 400mVss, ripple frequency : looks more like 195kHz than 300Hz. Output residual frequency spectrum: up to 2.5MHz. (as usual with SPS, so not recommended for radio amateurs equipment)

Very practical circuit, low price. Can be used as universal power supply, thanks to constant voltage and constant current mode. Measured values are at Vout 12V / 2A. Minimum input-output voltage difference : 3V , output ripple: 400mVss, ripple frequency : looks more like 195kHz than 300Hz. Output residual frequency spectrum: up to 2.5MHz. (as usual with SPS, so not recommended for radio amateurs equipment)

good price....working well

good price....working well

good price....working well

ok produkt

ok produkt

ok produkt

work great! tnx!

work great! tnx!

work great! tnx!

Product works well. One of three had missing trim pot before it was packaged. I replaced pot works ok.

Product works well. One of three had missing trim pot before it was packaged. I replaced pot works ok.

Product works well. One of three had missing trim pot before it was packaged. I replaced pot works ok.

Good product

Good product

Good product

The module looks well made, well assembled but there is a problem with the actual CC CV setting. The board doesn't allow alway a constant current / constant voltage output, even when I choose an output voltage close to input value, so very small Vin=24V/Vout=23V step down ratio. For example, when certain current/voltage value is set (i.e: 23V and 1.5A), once I increase the load (variable) and the load current increases over the set current, the voltage drops always at around 8.5v. Normaly I expect the board to allow keeping the voltage and the current constant when the load varies. I had simpler cc/cv step down modules with Lm2596 and worked well, keeping the set voltages and current values. I notice that the board worked well only when I tried to charge a 5s li-ion pack at 21v and 1.8A.

The module looks well made, well assembled but there is a problem with the actual CC CV setting. The board doesn't allow alway a constant current / constant voltage output, even when I choose an output voltage close to input value, so very small Vin=24V/Vout=23V step down ratio. For example, when certain current/voltage value is set (i.e: 23V and 1.5A), once I increase the load (variable) and the load current increases over the set current, the voltage drops always at around 8.5v. Normaly I expect the board to allow keeping the voltage and the current constant when the load varies. I had simpler cc/cv step down modules with Lm2596 and worked well, keeping the set voltages and current values. I notice that the board worked well only when I tried to charge a 5s li-ion pack at 21v and 1.8A.

The module looks well made, well assembled but there is a problem with the actual CC CV setting. The board doesn't allow alway a constant current / constant voltage output, even when I choose an output voltage close to input value, so very small Vin=24V/Vout=23V step down ratio. For example, when certain current/voltage value is set (i.e: 23V and 1.5A), once I increase the load (variable) and the load current increases over the set current, the voltage drops always at around 8.5v. Normaly I expect the board to allow keeping the voltage and the current constant when the load varies. I had simpler cc/cv step down modules with Lm2596 and worked well, keeping the set voltages and current values. I notice that the board worked well only when I tried to charge a 5s li-ion pack at 21v and 1.8A.