Depending on the ATX power supply being used, they may be unstable without the load. The project also leaves a lot of room for adding your own hacks such as variable voltage and current limiting If you use only the front panel switch to turn of the power supply, portions of the internal circuitry remain live. The heat that you notice is generated by this live power feeding the soft-start circuit in the SGA/SGI, which limits the inrush current at power up. Removing external power from the SGA/SGI supply via an external contactor or Yes, everything must be within the limits of a CV or CC supply. In the example in my previous post with the 100 A PSU set to 12 V and a current limit of 1 A, you will have noticed that it operates EITHER in CV mode OR in CC mode, depending on the load. With too low a load, it cannot work in CC mode. With too high a load, it cannot work in CV mode. Most common current-limiting implementations have a voltage drop that's too high for today's systems with their low-voltage supply rails; this design with its far lower voltage An alternating current (AC) power supply can either be single-phase or three-phase: A three-phase power supply is composed of three conductors, called lines, which each carry an alternating current (AC) of the same frequency and voltage amplitude, but with a relative phase difference of 120°, or one-third of a cycle (see Figure 4). These Current Adjustment Modification: The stock supply has its maximum current limit set via R3 and R3X. Astron selects both when they manufacture the power supply, and the values depend on the current they feel the supply is capable of safely providing, usually a few amps greater than the maximum according to the model number. 9eta.

power supply with current limit