477 Series Data Sheet

477 Series Data Sheet
Laboratory Photomultiplier Supplies
Output Voltages: 500V, 1kV ,2kV & 3kV
4 Watts Power Rating

477 Series

Features

Mains input 115/230V 50/60Hz

Excellent line and load regulation

Low output ripple, noise and temp-co.

Local or remote control

Switch selectable polarity

Voltage and current monitor

Auxiliary split rail supply

Direct reading DPM for voltage & current

Description
The 477 series of bench photomultiplier supplies are ideal for research and educational application. Through the use of state of the art surface mount technology, this series is able to offer considerable advantages over equivalent products both electrically and mechanically. These supplies are designed to operate from an AC supply of either 230V or 115V, and provide a closely controlled high voltage output. The use of high stability components in the feedback system ensures a low temperature coefficient and good long and short term drift. The output voltage may be controlled from zero to maximum output by either an external control voltage or by a front panel multi-turn potentiometer. These units will deliver up to 4W of regulated power at their maximum voltage settings. A split rail auxiliary supply (5V and 15V) is also provided for use with associated amplifier discriminator.

Description

The 477 series of bench photomultiplier supplies are ideal for research and educational application. Through the use of state of the art surface mount technology, this series is able to offer considerable advantages over equivalent products both electrically and mechanically. These supplies are designed to operate from an AC supply of either 230V or 115V, and provide a closely controlled high voltage output. The use of high stability components in the feedback system ensures a low temperature coefficient and good long and short term drift.
The output voltage may be controlled from zero to maximum output by either an external control voltage or by a front panel multi-turn potentiometer. These units will deliver up to 4W of regulated power at their maximum voltage settings. A split rail auxiliary supply (5V and 15V) is also provided for use with associated amplifier discriminator.

Ordering Information
Input Voltage	Output Voltage	Polarity	Output Current	Ripple pk-pk	Order Code
115/230V ac	0 to 500V	Switchable	8mA	5mV	477-301
115/230V ac	0 to 1kV	Switchable	4mA	4mV	477-302
115/230V ac	0 to 2kV	Switchable	2mA	2mV	477-303
115/230V ac	0 to 3kV	Switchable	1.3mA	5mV	477-304

Electrical Specification
Input voltage range	115/230V ac nominal +/-10%, 50/60Hz (Switchable 2 ranges).
VA rating (at full load)	35VA.
HV output voltage & current	See ordering information.
HV output ripple	See ordering information.
Polarity	See ordering information.
Load regulation	<20ppm (0.002%) 0% to 100% load.
Line regulation	<20ppm/V (0.002%) over the full input voltage range.
Stability (after hr. warm-up)	<15ppm during any 15 minute period and <50ppm during any 8 hour period.
Voltage control:	Local: Multi-turn potentiometer allows full control of the output voltage setting. Remote: A signal of 0V to 10.0V corresponds to 0% to 100% of output rating (Input Z >10kohm). Limit dV/dt: Selectable from the front panel ("Ramp"), this limits the rate of change in output voltage to <2V/mS (at max output voltage) reducing the chance of arcing within PM tube.
Temperature coefficient	<50ppm (0.005%) / deg.C at max voltage output.
Protection	Current is limited to approximately 110% of the maximum rated output, until overload condition is removed.
Voltage & Current Monitor	Direct reading 4.5 digit meter, switch selectable between the HV output voltage & current. Also available are buffered monitor outputs for both high voltage output current and voltage (available from the analogue port on the rear panel, 0 to 10V corresponding to 0 to 100% of the rated output).
Auxiliary Output	Fixed +/-5 and +/-15V dc @ 250mA, regulation: +/-1%, ripple: 10mV pk-pk.
Safety	Designed to meet EN 60950 and UL 1950.

Mechanical Specification
Dimensions	WxHxD: 212.73 x 98.88 x 254.0 mm (8.375" x 3.9" x 10.0")
Weight	4kg (9lb.) approx.
Connections	Input: IEC mains connector at rear Control: 9 way "D" type connector at rear HV output: 2 off high voltage connector type SHV Aux output: Binder 680 series, 7 pin.

Environmental Specification
Operating temperature range	-10 to +50 deg.C
Storage temperature range	-10 to +70 deg.C
Humidity	95%, +50 deg.C Non condensing

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