IOWA CITY MODERATED FORSALE NEWSGROUP > Automotive Repair
> Home Car Repair
> Majorpower VTC305 12V/24V converter voltage regulator
Majorpower VTC305 12V/24V converter voltage regulator
Majorpower VTC305-12-24 / VTC305-12-12 Voltage Regulator DC/DC Converter
This unit can be switched between the 12-24 volt and 12-12 volt output by moving internal jumpers. Output Voltage can be adjusted by 1/2v, 1v or 2v increment via dip switches on top of the unit. Input range 10.5 - 28 volts.
Currently set for 12v to 12v regulation.
The MajorVTC305 Voltage Converter is a variable-duty, cycle-
switching power supply with a precision linear regulator output. It
can be configured to run from a 32, 48 or 72 VDC power system
to provide output voltages as shown below.
The MajorVTC305 features reverse input protection, current
limiting, output over-voltage protection, ultra-quiet, low EMI
operation and a wide operating temperature range.
www.Majorpower.ca for more info.
Allows operation from 32, 48, or 72VDC power
Well suited for marine and other demanding
Wide Operating Temperature Range
Ruggedization against shock and vibration
Parallel output diodes allows connection between
Can be built to Class 1, Division 2 Standards for
Extra wide Temperature Range -40°C to +70 °C
Operating Temperature Range 0 to 40°C @ Maximum Output; Derate Linearly 2.5% per °C from 40°C
Humidity 0-95°C @ Relative Humiidty (non-condensing) with optional conformal coating
Audible Noise None Ødb @ 3 feet
Typical Service Life >10 years (87,600 hours)
Isolation Any Input or Output to Case 1500 VDC; Input to Output - Common Negative
Dimensions (L x W x H) 9.1 x 7.8 x 2.5 in / 23.1 x 19.8 x 6.4 cm
Physical 1 inch (2.5 cm) clearance all around; Marine grade aluminum;
Black powder epoxy coat, 18-8 Stainless steel fastenings
Connections 4 contact output terminals
Input Fuse AGC 20 x 2 Amp AGC 20 x 2 Amp
Noise on Input < 25 mV < 25 mV
Low Input Voltage Alarm 10.5 VDC 10.5 VDC
Current Limit 30 Amps in 30 Amps in
Output Volts Input -1 V or 13.5 to 17.0
(whichever is greater) Input -1 V or 24.0 to 27.5(whichever is greater)
Output Crowbar Programmed Output Volts x 1.2 Programmed Output Volts x 1.2
Ripple & Noise < 25 mV < 25 mV
Low Output Voltage Alarm Programmed Output Volts -2.5 VDC Programmed Output Volts -2.5 VDC
Transient Response < 1 V for 50% Surge < 1 V for 50% Surge
Line & Load Regulation < ± 0.5% < ± 0.5%
Duty Cycle Peak 20% for 10 min max;
Continuous 100% for 24 hours/day Peak 20% for 10 min max; Continuous 100% for 24 hours/day
Efficiency > 90% @ Maximum Output > 90% @ Maximum Output
