Current
InRush Limiter
If
powering up your amplifier causes the lights to flicker
or the main fuse to blow, the Current InRush Limiter
is the solution. This compact unit tames the high
current surge by momentarily limiting the inrush current
with a high power metal clad resistor. Approximately
1/2 second after power on, the resistor is shorted
out by a 16A relay. The full mains voltage and current
are then applied to the PSU.
 Current
InRush Schematic |
For
the Current InRush Limiter to work, a small transformer
(T1) is necessary. This will power up the 12V voltage
regulator which in turn feeds the InRush circuit.
Multiple tabs of the 12V regulated output is available
for ancillary devices like fans or our speaker DC
protection kit, the DCPROmk2.
This
kit involves working on LIVE Mains voltages. It is
not recommended for buyers without basic electrical
knowledge as touching a "live" trace on
the pcb can be fatal.
PCB
= 3.1" X 1.9" (80mm x 49mm)
Double Sided | FR4
|
