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October 25, 2023

12V or 24V to , 2V, 3V, 4V, 5V, 6V, 7V, 8V, 9V, 10V, 11V, 12 Volt DC/DC Converter UL listed

(Adjustable DC Regulator) 24V to 19V DC converter

Very reliable, inexpensive switchmode, regulated DC/DC converter adjustable to various voltages between 1.5V and 11V. Maximum 5 Amp output.

This is a single output DC/DC converter with barrel connectors for input and output. Input voltage up to 34 volts. It is adjustable by an externally accessible potentiometer between 1.5V and 11V as long as the input voltage is at least 0.5V higher than the output voltage. These switchmode voltage reducers can power a wide variety of DC input products from 12 volt and 24 volt trucks, heavy equipment, and aircraft cigarette lighter power points.

Higher voltage 12V-24VDC converter

Click here for the version that takes 24 volts to 12V, 13V, 14V, 15V, 16V, 17V, 18V, 19V, 20V, 21V, 22V DC/DC Converter
These are used by original equipment manufacturers to power their devices whenever 24V to 34V is available, and a reduction in voltage is required. It is an easy way to make your equipment mobile.

The PST-DC2920L DC converter works fine in either 12 volt or 24 volt vehicles.

Price $49.95 each
PST-DC2920L 5 Amp DC/DC converter with two cords and barrel connector assortment
24V to 19V DC converter
Quantity 1-20 21-100 101-500 501+
Price Each $65 $59 $55 $49
ZHJX002adapters with a barrel connector input and screw terminal output
To adapt the barrel connector to screw terminals on the INPUT cable
$2.50 each
adapters with a barrel connector input and screw terminal output
5.5 x 2.5 mm barrel socket
To adapt the barrel connector to screw terminals on the OUTPUT cable
$2.50 each
cigarette lighter plug on one end, 5.5 x 2.1 mm barrel plug on the other
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 2Amps*12Volts*0.8efficiency = 19 Watts output maximum.
Price $2.25 each
PST-WX25-10 Optional 10 connector kit that fits only on the input cable (see below for sizes)
10 connector kit

Model number PST-DC2920L DC/DC Converter
Country of origin USA, NAFTA eligible
Function Switchmode voltage reducing converter
Input voltage range 6 VDC to 34 VDC (this converter will only reduce the voltage, so the input voltage must be at least 10% higher than the output voltage that is set)
Peak output power 60 Watts (limited to 5 amps output, so at 1.5V the maximum power would be 7.5W)
Peak output current Up to 5 Amps output
Output voltage nominal User or factory adjustable single output 3V-12 Volts
No-load overhead 10 to 30 mA is drawn from the battery when no load is connected, see chart below
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.
Voltage adjustment User adjustable by means of a pot accessable from the outside of the case, see diagram below
Line regulation ± 0.5%
Load regulation ± 1%
Efficiency 77% 24 VDC input, 1A load to 88% 12 VDC input, 1.0A 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
Output wire gauge and length AWG 16, 20 inches, 500 mm
Weight 0.3 lbs, 123 g, 4.4 ounces without cables
Temperature range -20° to +55°C
Agency approvals UL60950-1, UL62638-1 UL, cUL, CB, IEC60950-1
Polarity Center positive  
These connectors are included with the PST-DC2920 and fit on the OUTPUT cable plugset
  • 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
These optional adapters fit on the INPUT cable 10 connector kit
These slide-on adapters fit over the 5.5mm x 2.5mm connector above.
3.5mm OD x 1.35 ID
4.0mm OD x 1.7 ID
5.5mm OD x 1.7 ID
4.75mm OD x 1.75 ID
5.5mm OD x 2.1 ID
6.3mm OD x 3.0 ID
6.0mm OD x 4.3 ID center pin
7.4mm OD x 5mm ID center pin
7.9mm OD x 5.6 ID center pin
Rectangular Lenovo connector

Output voltage Maximum Amps Maximum Watts
1.5 Volts 5 A 7.5W
2 Volts 5 A 10 W
3 Volts 5 A 15 W
4 Volts 5 A 20 W
5 Volts 5 A 25 W
6 Volts 5 A 30 W
7 Volts 5 A 35 W
8 Volts 5 A 40 W
9 Volts 5 A 45 W
10 Volts 5 A 50 W
11 Volts 5 A 55 W
efficiency curve for the 5volt 5amp dc converter
Efficiency curves

Voltage adjustment access hole

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