24V input laptop adapter, 24 volt to 16V, 19V, 20V, 21V, 22V, DC to DC converters suitable for laptops in 24V systems, up to 5 amps output, wheel chair laptop power adapter

October 25, 2023

(Adjustable DC laptop adapter)

Reliable, inexpensive regulated DC/DC converter adjustable to various voltages. 5 Amps output.

DC/DC laptop adapter with one output, and 24V or 28V input. It uses barrel connectors for input and output with screw terminal adapters available. The input voltage can be up to 34V. Voltage adjustment is made with an externally accessible potentiometer between 12V and 22V (the input voltage must be at least 0.5 Volts higher than the output voltage setting). These switchmode voltage reducers will run a wide variety of DC input products and can take power from 24 volt and 28 volt trucks, wheelchairs, heavy equipment, and aircraft cigarette lighter power points.

These can run laptops in 24V and 28V equipment, including 24V wheel chairs, with input voltage up to 34 volts.

The PST-DC2920H DC converter als works fine in either 28 volt or 24 volt vehicles.

Price $65 each

Quantity	1-20	21-100	101-500	501+
Price Each	$65	$59	$55	$49.00

PST-DC2920H-16V 5 Amp DC/DC converter with two cords and barrel connector assortment	16V 80W
PST-DC2920H-18V 5 Amp DC/DC converter with two cords and barrel connector assortment	18V 90W
PST-DC2920H-19V 5 Amp DC/DC converter with two cords and barrel connector assortment	19V 95W 19.5V
PST-DC2920H-20V 5 Amp DC/DC converter with two cords and barrel connector assortment	20V 100W
PST-DC2920H-21V 5 Amp DC/DC converter with two cords and barrel connector assortment	21V 100W
PST-DC2920H-22V 5 Amp DC/DC converter with two cords and barrel connector assortment	22V 100W
To adapt the barrel connector to screw terminals on the INPUT cable	ZHJX002 $2.50 each
This cigarette lighter plug adapter has a 2A fuse, so it is applicable to low power applications. For example if the input voltage is 24V then 2Amps24Volts0.8efficiency = 38 Watts output maximum.	Price $2.25 each
SDY-C53F-2.5 5.5 x 2.5 mm barrel socket To adapt the barrel connector to screw terminals on the OUTPUT cable	$2.50 each

Specifications

Model Number	PST-DC2920H DC/DC Converters
Country of origin	USA, NAFTA eligible
Function	Switchmode voltage reducing converter
Input Voltage Range	20V to 34 VDC
Peak Output Power	Up to 100 Watts (limited to 5 amps output)
Peak Output Current	5 Amps output
Output Voltage Nominal	User or factory adjustable single output 12V-22 Volts
Output Voltage Typical	16V, 19V, 20V, 21V, 22V others available, user adjustable (see diagram below)
Voltage Adjust	There is a trim pot accessible from the outside of the case
No-Load Overhead	10 to 30 mA is drawn from the battery when no load is connected
Connectors	Input connector is a 5.5x2.1 mm barrel socket Output connector is a 5.5x2.5 mm barrel socket The two included cables are identical, with a 5.5x2.1mm barrel plug on one end and a 5.5x2.5 mm barrel plug on the other end. The cables are 16AWG zip cord and 20 inches long. Barrel plug adapters fit on the end of the output cable
Line Regulation	± 0.5%
Load Regulation	± 1%
Efficiency	77% 24 VDC input, 1A load
Automotive surge protection	Withstands the standard 80 volt load dump test.
Isolation	Non-isolated, common ground, spikes on the positive side are eliminated
Dimensions	105 x 65 x 30 mm 4.2 x 2.6 x 1.2 inches without cables
Input wire gauge and length	AWG16, 20 inches, 500 mm, zip cord
Output wire gauge and length	AWG 16, 20 inches, 500 mm, zip cord
Weight	0.3 lbs, 123 grams, 4.4 ounces without cables

This plug adapters are included. They fit on the output cable only.

2.35 OD x 0.7 ID Barrel
3.0 OD x 1.1 ID Barrel
3.5 OD x 1.35 ID Barrel
4.0 OD x 1.7 ID Barrel
4.75 mm OD x 1.75 mm ID Barrel EIAJ-03
5.0 mm OD x 3.5 mm ID with center pin
5.5 mm OD x 1.5 mm ID type 2 Barrel
5.5 mm OD x 2.5 mm ID Barrel
6.3 OD x 3.0 ID center pin Barrel
6.0 OD x 4.4 ID center pin Barrel
7.4 mm OD x 5.0 center pin ID Barrel
7.9 OD x 5.6 ID center pin Barrel

efficiency curve for the 5volt 5amp dc converter

Efficiency curves

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