797 Series Data Sheet

797 Series Data Sheet
Regulated High Voltage Modules
Output Voltages 5kV, 10kV, 20kV
10 Watts Power Rating

Model 797 Series

Features

Supply voltage 24V dc nominal

Positive and negative output versions

Good line and load regulation

Low output ripple

Remote enable/disable facility (logic levels)

Internal adjustment of output voltage

Metal cased for good screening

Description
The six models in the Brandenburg 797 series provide a 10 Watt output with positive or negative polarity and output voltage adjustable up to 5kV, 10kV or 20kV. A feedback regulator using high gain and high stability components gives good regulation against line and load variations, high stability of output and a low ripple level. The output voltage is set by an internal potentiometer. Remote enable/disable control is also provided, operating at 5V logic levels. The modules have comprehensive protection and will withstand output short circuits, flashovers and overloads.

Description

The six models in the Brandenburg 797 series provide a 10 Watt output with positive or negative polarity and output voltage adjustable up to 5kV, 10kV or 20kV. A feedback regulator using high gain and high stability components gives good regulation against line and load variations, high stability of output and a low ripple level. The output voltage is set by an internal potentiometer. Remote enable/disable control is also provided, operating at 5V logic levels. The modules have comprehensive protection and will withstand output short circuits, flashovers and overloads.

Ordering Information
Input Voltage Range	Output Voltage Range	Output Polarity	Output Current	Order Code
24V dc Nominal (All Versions)	2 kV - 5kV	Positive	2mA	797-101
	2 kV - 5kV	Negative	2mA	797-201
	5 kV - 10kV	Positive	1mA	797-102
	5 kV - 10kV	Negative	1mA	797-202
	10 kV - 20kV	Positive	500渙	797-103
	10 kV - 20kV	Negative	500渙	797-203

Electrical Specification
Input voltage range	22 to 28V dc
Max. input voltage	36V
Input current	(no load) 100mA max. (full load) 1A max.
Output voltage range	see Ordering Information
Output current	see Ordering Information
Control of output	(1) Internal multi-turn potentiometer varies output over range stated under Ordering Information (2) Remote enable/disable by logic signal. -0.5V to +0.8V = ON. +2V to +5.5V = OFF.
Output ripple	7.5V pk-pk, (at full load) External capacitance will give further ripple reduction
Line regulation	0.25%
Load regulation	0.25% (no load to full load)
Temperature coefficient	300 ppm per deg.C typ.
Protection	(1) Proof against output short circuits and flashovers (2) Output current is limited to approx. 150% of full load current

Environmental Specification
Operating temperature range	0 to +60 deg.C.
Storage temperature range	-20 to +85 deg.C.

Mechanical Specification
Dimensions	147 x 102 x 48mm (5.8" x 4" x 1.9")
Weight	750 g (1.7 lb) approx.
Connections	Input: Molex 7 pin Mating connector: Molex 10-17-3071 shell with terminals 2478 Output: Flying lead 500mm long
Pin Connections	1 HV return 2 Supply 0V 3 Output enable/disable 4 Supply + 24V dc nominal 5 Chassis 6 Internal reference 7 External reference (normally linked to pin 6, to use the internal reference)

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