Product Manual

4
Introduction
The VTC140 and VTC240 Voltage Converters are variable duty cycle switching power supplies
incorporating state of the art switchmode technology for unmatched efciency and ultra-quiet
operation. Multiple stages of ltering reduce radiated or conducted noise to very low levels.
They can be run from a 24 VDC or 28 VDC battery system. Safety features include reverse input
protection, current limiting, and output over voltage crowbar.
We are condent that you will get many years of reliable service from these Voltage Converters.
Specications
Input Voltages VTC140-24-12 VTC240-24-12
Input Volts (DC) 20-35
Input Amps (max) 11.6 17.8
Input Fuse (slow blow) MDA-12 MDA-20
Output Voltages VTC140-24-12 VTC240-24-12
Output Volts (DC) 13.8± 0.1
Output Amps 12 Continuous / 15 peak 20 continuous / 23 peak
Output Crowbar 16.5 ± 0.5V
Noise on Input < 10 milli-Volts
Noise on Output < 10 milli-Volts
Transient Resp. <1V for 50% Surge
Efciency >88% @ maximum output
Temp. Range 0 - 40ºC @ maximum output
Isolation Any Input or Output to Case 500VDC Input to Output Common Negative
Dimensions 7.9 in / 20.1cm
Width 4.0 in / 10.2cm
Height 2.4 in / 6.1cm
Clearance 1 Inch (2.5 cm) all around
Material Marine Grade Aluminum
Finish Black Anodize / Powder Epoxy
Weight 2 lb / 0.9 kg 2.2lb / 1 kg
Designed and manufactured by: ANALYTIC SYSTEMS WARE (1993) LTD.
8128 River Way, Delta, BC V4G 1K5 Canada p. 604.946.9981 f. 604.946.9983 tf. 800.668.3884
www.analyticsystems.com
[e-mail]
Revised September 2014
* Specications subjects to change without notice.