Model 25: Low Voltage AC to DC Power Supply
The Model 25 is a low voltage
AC to DC switching power supply that allows very efficient power transfer.
The unit itself does not generate any significant heat and requires
no external cooling. It is
encapsulated and very compact at 1” x 1” x 0.78” in size.
The entire unit can be dropped into any wiring conduit box for
installation. It operates at a wide temperature range of -20 to +70oC.
The Model 25 allows integration
of low power DC instrumentation into 24 V AC systems. The input voltage can be
21 - 26 V AC or 28 – 36 V DC. The
power input has transient voltage suppression as well as over current protection
using a self-resetting fuse. This
protection to the unit under most fault conditions.
The output is 24 V DC at 250 mA
maximum. Output voltage ripple is
low at 70 mV typical. A diagnostic
LED on the output indicates the availability of DC power.
Output has short circuit protection and will recover automatically when
the short is removed. Please
contact the factory for other AC input or DC output voltage ranges.
VAC Input (50 to 400 Hz.)
VDC output at 250 mA
output ripple (70 mV typical)
temperature range of –20oC to 70oC operation
power has over current and transient voltage suppression
is short circuit protected with auto recovery
power present diagnostic LED
use of DC powered devices in low voltage AC systems
switching power supply design runs cool without the need for external
compact 25.4 mm (1.0”) x 25.4 mm (1.0”) x 20 mm (0.78”) H encapsulated
module can fit into almost any wiring conduit box
leads for easy installation