High Temperature Power Supplies

HAQ Series

The HAQ Series high voltage power supplies are designed specifically for use in high temperature environments. They provide isolated outputs of up 3kV and will operate at 185 degrees C case temperature. The output voltage of the HAQ power supply is directly proportional to the input voltage (0-15VDC). The output ripple is typically less than 0.1% at full power load. The two output leads are floating and fully isolated from the input power leads by over 1T Ohm (@ 25 deg C) with less than 50pF of coupling capacitance. This permits either positive or negative polarity operation. The circuitry incorporates the same high efficiency Royer Oscillator designed for our H-25B series which has been in production since 1981. All HAQ's are reverse input voltage and short circuit protected.

Model	Output Voltage	Output Current	Ripple
HAQ-5	0 to 500V	0 to 3mA	<0.1%
HAQ-15	0 to 1500V	0 to 1mA	<0.1%
HAQ-30	0 to 3000V	0 to 0.5mA	<0.1%

HAQ Series Specifications
HAQ Series.pdf
Adobe Acrobat document [213.1 KB]

HTC Series

HTR Series

The HTC Series high voltage power supplies are designed to operate at extreme temperatures and in harsh environments especially for the oil well logging industry. The HTC units provide up to 3kV at 100uA of regulated output, with either positive or negative polarity. All models are adjustable over a 3:1 output voltage range by either voltage or resistance programming. Temperature drift is less than 20 ppm/deg C by using advanced internal reference and drift compensation techniques. All models are reverse input and output arc and short circuit protected.

Model	Output Voltage	Output Current	Ripple
HTC-LVP-15	0 to 1000V	0 to 0.3mA	<0.03%
HTC-MVP-15	0 to 2000V	0 to 0.15mA	<0.03%
HTC-HVP-15	0 to 3000V	0 to 0.1mA	<0.03%
HTC-LVP-24	0 to 1000V	0 to 0.3mA	<0.03%
HTC-MVP-24	0 to 2000V	0 to 0.15mA	<0.03%
HTC-HVP-24	0 to 3000V	0 to 0.1mA	<0.03%
HTC-LVP-30	0 to 1000V	0 to 0.3mA	<0.03%
HTC-MVP-30	0 to 2000V	0 to 0.15mA	<0.03%
HTC-HVP-30	0 to 3000V	0 to 0.1mA	<0.03%
HTC-LVN-15	0 to - 1000V	0 to 0.3mA	<0.03%
HTC-MVN-15	0 to - 2000V	0 to 0.15mA	<0.03%
HTC-HVN-15	0 to - 3000V	0 to 0.1mA	<0.03%
HTC-LVN-24	0 to - 1000V	0 to 0.3mA	<0.03%
HTC-MVN-24	0 to - 2000V	0 to 0.15mA	<0.03%
HTC-HVN-24	0 to - 3000V	0 to 0.1mA	<0.03%
HTC-LVN-30	0 to - 1000V	0 to 0.3mA	<0.03%
HTC-MVN-30	0 to - 2000V	0 to 0.15mA	<0.03%
HTC-HVN-30	0 to - 3000V	0 to 0.1mA	<0.03%

HTC Series Specifications
HTC Series.pdf
Adobe Acrobat document [135.6 KB]

H-25B Series

The model H-25B Series high voltage power supplies are a versatile DC to DC converter series, designed for severe environment applications requiring a regulated high voltage source. The output voltage is directly sensed and can be adjusted over a 3 to 1 range by means of an output trim resistor.
The H25B series utilizes advanced high voltage techniques and compensation networks. All components are specially selected and burned in prior to assembly. The converter section uses rugged TO-5 transistors to insure a safety margin for secondary breakdown and leakage effects. In addition, the high voltage transformer is totally encapsulated with a low loss high temperature epoxy resin that guards against internal breakdown or corona.
The H-25B series is not restricted by orientation. Moreover, as the unit is hard potted, it does not contain oil that could leak out and damage other equipment.
The H-25B Series high voltage power supplies are specially designed linear regulator type power supplies. The normal input voltage of 24 VDC is stepped up by a push-pull oscillator to a high voltage output which is referenced to the input ground. The output voltage of the H-25B unit is NOT FLOATING. The output high voltage return and the input power return are internally connected together.
The output voltage may be controlled in two different ways. In the voltage programming mode, a control voltage between 0 - 5 VDC will adjust the output between 0 and full output. In the resistance programming mode, a resistor placed between the control voltage pin and ground will set the output to a voltage which depends on the value of the resistance used and the model number. Typically a 10-kOhm resistor will set the output voltage to 50%. Zero resistance yields full output for positive units.
Negative output units are available as well - for different types of detector sensing topologies. Here, the maximum output voltage is developed with the control wire open.

Model	Output Voltage	Output Current	Ripple
H-25BLVP-15	0 to 1000V	0 to 0.3mA	<0.03%
H-25BMVP-15	0 to 2000V	0 to 0.15mA	<0.03%
H-25BHVP-15	0 to 3000V	0 to 0.1mA	<0.03%
H-25BLVP-24	0 to 1000V	0 to 0.3mA	<0.03%
H-25BMVP-24	0 to 2000V	0 to 0.15mA	<0.03%
H-25BHVP-24	0 to 3000V	0 to 0.1mA	<0.03%
H-25BLVP-30	0 to 1000V	0 to 0.3mA	<0.03%
H-25BMVP-30	0 to 2000V	0 to 0.15mA	<0.03%
H-25BHVP-30	0 to 3000V	0 to 0.1mA	<0.03%
H-25BLVN-15	0 to 1000V	0 to 0.3mA	<0.03%
H-25BMVN-15	0 to - 2000V	0 to 0.15mA	<0.03%
H-25BHVN-15	0 to - 3000V	0 to 0.1mA	<0.03%
H-25BLVN-24	0 to - 1000V	0 to 0.3mA	<0.03%
H-25BMVN-24	0 to - 2000V	0 to 0.15mA	<0.03%
H-25BHVN-24	0 to - 3000V	0 to 0.1mA	<0.03%
H-25BLVN-30	0 to - 1000V	0 to 0.3mA	<0.03%
H-25BMVN-30	0 to - 2000V	0 to 0.15mA	<0.03%
H-25BHVN-30	0 to - 3000V	0 to 0.1mA	<0.03%

H-25B Specification
H-25B Series.pdf
Adobe Acrobat document [235.2 KB]

HTR Series

The HTR/HTDR Series high voltage power supplies are designed to operate at extreme temperatures and in harsh environments especially for the oil well logging industry. The HTR/HTDR units provide up to 3kV at 100 uA of regulated output, with either positive or negative polarity. All models are adjustable over a 3:1 output voltage range by either voltage or resistance programming. Temperature drift is less than 20 ppm/deg C by using advanced internal reference and drift compensation techniques. All models are reverse input and output arc and short circuit protected.

Model	Output Voltage	Output Current	Ripple
HTR-LVP-15	0 to 1000V	0 to 0.3mA	<0.03%
HTR-MVP-15	0 to 2000V	0 to 0.15mA	<0.03%
HTR-HVP-15	0 to 3000V	0 to 0.1mA	<0.03%
HTR-LVP-24	0 to 1000V	0 to 0.3mA	<0.03%
HTR-MVP-24	0 to 2000V	0 to 0.15mA	<0.03%
HTR-HVP-24	0 to 3000V	0 to 0.1mA	<0.03%
HTR-LVP-30	0 to 1000V	0 to 0.3mA	<0.03%
HTR-MVP-30	0 to 2000V	0 to 0.15mA	<0.03%
HTR-HVP-30	0 to 3000V	0 to 0.1mA	<0.03%
HTR-LVN-15	0 to - 1000V	0 to 0.3mA	<0.03%
HTR-MVN-15	0 to - 2000V	0 to 0.15mA	<0.03%
HTR-HVN-15	0 to - 3000V	0 to 0.1mA	<0.03%
HTR-LVN-24	0 to - 1000V	0 to 0.3mA	<0.03%
HTR-MVN-24	0 to - 2000V	0 to 0.15mA	<0.03%
HTR-HVN-24	0 to - 3000V	0 to 0.1mA	<0.03%
HTR-LVN-30	0 to - 1000V	0 to 0.3mA	<0.03%
HTR-MVN-30	0 to - 2000V	0 to 0.15mA	<0.03%
HTR-HVN-30	0 to - 3000V	0 to 0.1mA	<0.03%

HTR Series Specifications
HTR Series.pdf
Adobe Acrobat document [311.2 KB]

HTDR Series

The HTR/HTDR Series high voltage power supplies are designed to operate at extreme temperatures and in harsh environments especially for the oil well logging industry. The HTR/HTDR units provide up to 3kV at 100 uA of regulated output, with either positive or negative polarity. All models are adjustable over a 3:1 output voltage range by either voltage or resistance programming. Temperature drift is less than 20 ppm/deg C by using advanced internal reference and drift compensation techniques. All models are reverse input and output arc and short circuit protected.

Model	Output Voltage	Output Current	Ripple
HTDR-LVP-15	0 to 1000V	0 to 0.3mA	<0.03%
HTDR-MVP-15	0 to 2000V	0 to 0.15mA	<0.03%
HTDR-HVP-15	0 to 3000V	0 to 0.1mA	<0.03%
HTDR-LVP-24	0 to 1000V	0 to 0.3mA	<0.03%
HTDR-MVP-24	0 to 2000V	0 to 0.15mA	<0.03%
HTDR-HVP-24	0 to 3000V	0 to 0.1mA	<0.03%
HTDR-LVP-30	0 to 1000V	0 to 0.3mA	<0.03%
HTDR-MVP-30	0 to 2000V	0 to 0.15mA	<0.03%
HTDR-HVP-30	0 to 3000V	0 to 0.1mA	<0.03%
HTDR-LVN-15	0 to - 1000V	0 to 0.3mA	<0.03%
HTDR-MVN-15	0 to - 2000V	0 to 0.15mA	<0.03%
HTDR-HVN-15	0 to - 3000V	0 to 0.1mA	<0.03%
HTDR-LVN-24	0 to - 1000V	0 to 0.3mA	<0.03%
HTDR-MVN-24	0 to - 2000V	0 to 0.15mA	<0.03%
HTDR-HVN-24	0 to 3000V	0 to 0.1mA	<0.03%
HTDR-LVN-30	0 to - 1000V	0 to 0.3mA	<0.03%
HTDR-MVN-30	0 to - 2000V	0 to 0.15mA	<0.03%
HTDR-HVN-30	0 to - 3000V	0 to 0.1mA	<0.03%

HTDR Specifications
HTDR Series.pdf
Adobe Acrobat document [311.2 KB]