Active load regulator with current stabilization, 8-28 volts 0,2-3 amperes. Encyclopedia of radio electronics and electrical engineering
Encyclopedia of radio electronics and electrical engineering / Regulators of current, voltage, power
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The presented scheme of the active load controller allows you to adjust the amount of current consumption in a wide range. Considering that the circuit is based on a switching current regulator, the amount of heat released on the regulator is much lower compared to a simple load resistance. The circuit maintains a constant load current over a wide range of input voltage changes.
(click to enlarge)
The current regulation range is 0,2 - 3,0 A. The operating voltage range is 8-28 V. After setting the required current, the device automatically maintains the current in the specified range.
Chip U1 is required to be installed on the heatsink. Current adjustment is carried out by potentiometer R4. It is desirable to install load resistances in a place where heat exchange with the environment would be ensured. During operation, the temperature at the load resistances can reach up to 80-100 °C.
Coil inductance 100 mH (52 kHz 3A)
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