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April 21, 2022

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

24VAC to 12VDC 1.5 Amp power source
24VAC to 12V 18 watt power supply 24VAC to 1V, 3V, 3.3V, 4V, 4.8V, 5V, 6V 8V, 8.4V, 9V, 10V, 11V, 12V, 13V, 14V, 14.4V, 15V, 16V, 17V, 18V
24VAC input, user adjustable DC output, including 5V 5A, and 12V 3A

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 add_to_cart.gif $10.75 $9.70 $8.80 $7.99
Optional PST-2.1-Cable
barrel connector
add_to_cart.gif $5.00 $4.80 $4.50 $4.00
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 barrel connector on zip cord
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.

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1163 South 1680 West
Orem, Utah 84058

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