Braking Resistor is, as it's name suggests, a general-purpose braking resistor primarily intended for handling regenerative power from low to mid-power servo and stepper-motor drives.
An external high-power shunt resistor is switched on, drainging power from the bus when the bus voltage exceeds some limit , and kept on for at least and until the bus voltage falls below .
Braking Resistor can be used with bus voltages ranging from 12 V to 75 V, and can sustain an average load of 8 A, or 35 A at a 5% duty cycle with 1 ms pulses, with the default pass transistor. Other transistor choices allow operation at up to 300 V and significantly higher currents.
This entire project is open source hardware and made available under the terms specified in each file. Commercial solutions are available upon request, see Desel.