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High efficiency 24VAC to 12VDC 20 Watt AC/DC Converters with removable screw terminal block (also a 36VDC to 12VDC DC/DC converter)

Tiny switchmode 24VAC/12VDC power supply offers much higher efficiency and lower ripple than the cheaper linear versions. The biggest application of these is to power 12 volt video cameras to replace 24VAC cameras, fiber optics transmitters, media converters, REX PIR's (request to exit passive infrared), proximity readers and other accessories. Also works as a 36VDC to 12VDC converter.

Since the input voltage can sag to as low as 20VAC these can be used at the load end of a long wire 24VAC run to give a regulated 12VDC. Note that there many products available that look like this, but have poorer specifications.

	Quantity	1-9	10-49	50-99	100+
PST-AC24DC12		$10.75	$9.70	$8.80	$7.99
Optional PST-2.1-Cable		$5.00	$4.80	$4.50	$4.00

PST-AC24DC12
Input voltage AC	24VAC nominal	20VAC to 28VAC
Input voltage DC	Also operates on DC voltage if desired	28VDC to 40VDC
Output voltage	12VDC
Output Current	1.67A continuous, 3A peak
Input Frequency	50Hz, 60Hz	48 Hz to 65 Hz
Voltage Accuracy	±3%	at 0.2A load
Switchmode frequency	150kHZ
Load regulation	<1.2% over the output current range from 0.2 to 1.5A
Efficiency	>85% at 1.5A output full load
Protections	Short circuit protect, current limit protection
Operating Temperature	-40°C to +80°C
Storage Temperature	-50°C to +108°C
Thermal Shutdown	135°C internal temperature
Case Material	Non-conductive black ABS polymer
Connector	Phoenix-style bare wire screw terminals, 5.08 mm spacing
DC input	When using a direct current input, connect the plus and minus to the input terminals, it doesn't matter which is the plus or minus, since we put a full bridge rectifier on the input, which will sort it correctly.
Wire gauge	12AWG to 28AWG
Weight	1.3 oz., 37 grams
Dimensions	65mm x 30mm x 23 mm 2.55 x 1.18 x 0.91 inches
Warranty	1 year from installation date, 2 years from sale date
Optional PST-2.1-Cable for connecting to video security cameras	5.5 x 2.1 mm barrel plug on 18AWG zip cord, black and red. The length of the cord is 60 inches, and is bare on the end. Cut to length required.