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Switchmode Voltage Regulator; 2229; PR Electronics;

Switchmode Voltage Regulator

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Switchmode Voltage Regulator
Switchmode Voltage Regulator
Key features

AC/DC input voltage
Adjustable output 5...24 VDC, max. 40 W
Adjustable from external potentiometer
Short-circuit protection
Thermal overload protection
Standard 11-pole relay socket


The regulator is based on primary switchmode technology to achieve a high efficiency.
The outputs are adjustable from a front potentiometer in the range 5...24 VDC or from an external potentiometer.

General voltage regulator for external transformer used in connection with measurement systems requiring fixed stabilized 24 VDC.
Supply for any other sensors, transmitters or a general variable voltage regulator in the range 5...24 VDC.
Used as a power efficient pre-regulator for 5 VDC linear regulator (e.g. from 32 V to 8 V).
Used as adjustable power supply controlled from external potentiometer.


A green LED indicates active output.

AC or DC input voltages.

A rectifier bridge allows free choice of polarity for the DC input.

Mounting for a standard 11-pole socket which can be adapted for DIN rail or plate use with PR’s 7023 adaptor and 7024 mounting keying.


Environmental Conditions

Specifications range -20°C to +60°C

Relative humidity < 95% RH (non-cond.)

Protection degree IP30


Mechanical specifications

Dimensions (HxWxD) 80.5 x 35.5 x 84.5 mm (D is without pins)

Weight approx. 170 g


Common specifications

Internal consumption 10 W

Transient stability (10%-max. load) < 250 mV

Temperature coefficient 0.05% / °C

EMC immunity influence < ±0.5%


Input specifications

Input voltage (AC) Max. 28 VAC Min. VAC = ( Vout. + 5 ) / 1.2

Input voltage (DC) Max. 40 VDC Min. VDC = ( Vout. + 5)

Frequency 50...60 Hz


Output specifications

Current output

Current limit Typ. 5.8 A (short circuit)

Output voltage 4.5...26.4 VDC

Output power Max. 40 W

Output current Max. 2.5 A / 5 VDC Max. 2.5 A / 12 VDC

Max. 2.5 A / 15 VDC

Max. 1.7 A / 24 VDC

Load effect, (0-max. load) < 1.5% / A

Output ripple < 20 mVRMS



EMC 2004/108/EC

EAC TR-CU 020/2011

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19. 3403 2300
Av. Santo Estevão, 509
Vila Rezende - 13405-249

Piracicaba, SP - Brazil
Techno Supply Import and Export Ltda.
CNPJ 05.505.756/0001-06