January 15, 2024

Robust 24VAC to 24VDC Power Supply, 50 Watts

24 volt AC/DC converters with 19 to 28 VAC input. Made in USA, NAFTA qualified. 50Hz, 60Hz, 400Hz

24VAC inverters, DC converters, battery backups

PST-ADC2424-2A
Quantity	Price
1-9	$53
10-99	$48
100-499	$43
500+	$39

Optional DIN mounting hardware
Quantity	Price
1-49	$3.00
50-99	$2.50
Includes screws and hardware for both 35mm and 15mm DIN rails (does not include the rail)

These are regulated switching power converters (switchmode), designed to allow the use of 24 volt DC equipment in 24VAC security, CCTV camera systems and energy management applications. These 50 Watt converters have been designed to be very rugged electrically and have precise voltage regulation.

These are also known as 24 volt rectifiers, and voltage regulators. They can be used whenever 24VAC power is available and 24VDC power is needed, up to 60 watts.

Custom output voltages are available by special order, let us know what you need.

24VAC to 24VDC rectifier for security camera installations

Input Voltage	20.5VAC to 28VAC, 50Hz or 60Hz, reduced capacity at 400Hz
Output Voltage	24.0 VDC ± 0.2 VDC
Output Current	2A or less, 3A if the input voltage is above 24VAC
Line regulation	± 8%
Load regulation	± 8.0%
Maximum output ripple	5% p-p
Maximum switching noise level	90mV p-p
Maximum operating temperature range	-40°C to 75°C (-40°F to 167°F)
Maximum storage temperature range	-40°C to 90°C (- 40°F to 194°F)
Minimum efficiency	78% 24 VAC input, 0.15A load

Physical Specifications

Weight

3.8 oz, 108 grams

Dimensions including flange

Length

Width

Height

126mm, 5 inches

56 mm, 2.2 inches

43 mm, 1.7 inches

Mounting holes

Slots are 6mm wide, 10mm long and 114 mm center-to-center

Drawing for mounting

ADC2424.PDF

3D files

IGES STEP

Connections

Input connector

Output connector

Terminal blocks

2 position screw terminal block

2EDCK; 28AWG-12AWG wires accepted

Maximum output current depends on input voltage*
Minimum input voltage 50/60Hz	Maximum output current at 24VDC	Watts
22 VAC	500 mA	12W
23.1 VAC	1A	24W
24.4 VAC	2A	48W
25.1 VAC	3A	72W

400Hz input? Maximum output current depends on input voltage*
Minimum input voltage	Maximum output current at 24VDC	Watts
21VAC 400Hz	0.04A	1 W
22 VAC 400Hz	130 mA	3W
23 VAC 400Hz	300 mA	7.2W
24 VAC 400Hz	600 mA	14.4W
25 VAC 400Hz	900 mA	21.6W
26 VAC 400Hz	1A	24W
27VAC 400Hz	1.5A	36W
28VAC 400Hz	2.3A	62W

*This calculation assumes that the AC input source has enough power available to supply the watts output.

The PST-ADC2424 works with our DIN rail mounting system, but is not centered as shown below:

Q: I don't have 60 watts available on my 24VAC line, is it OK to operate the PST-AC2424-2A at lower powers?
A: Yes, you can use this converter at lower powers. The power supply module will only draw the power it needs to supply your load. Of course there must be enough power (watts) available on the 24VAC line to power your load.

Q: How can you regulate the voltage so accurately with such a wide range of input voltages?
A: The PST-AC2424-2.5A is not just a rectifier, it is a fully configured switchmode power supply with a wide range input centered on 24VAC. With the current and voltage feedback loops in the switchmode circuit, the output voltage can be locked solid. This makes the output voltage independent of input voltage or output current.

Q: Does the rectifier add noise to the AC line?
A: No, the sine wave of the AC line is not distorted by the PST-AC2424-2A. Thus you don't have to worry about noise being transmitted to other devices connected to the 24VAC line. However, most other rectifiers do distort the AC power considerably, especially half-wave rectifiers.

Advantages:

Inexpensive Switchmode low voltage AC/DC Converter.

High efficiency.

Excellent line and load regulation.

Wide input voltage range.

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Tuesday, 03-Dec-2024 20:34:00 EST

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