High Voltage Power Supply Module Operating in Magnetic Field Output Voltage 2500V ~ 4000V Load...
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Transcript of High Voltage Power Supply Module Operating in Magnetic Field Output Voltage 2500V ~ 4000V Load...
High Voltage Power Supply ModuleOperating in Magnetic Field
Output Voltage 2500V ~ 4000VLoad Resistance 10 M ~Magnetic Field 1.5 teslaEfficiency 60 %Input Voltage 5 V
High Voltage DC Power Supply Module MODEL:TTR-17473
MODEL:TTR-17473
Features ・Compact and Light weight ・ High Voltage Output ・ Easy Operation Specifications ・Output voltage ? 1 100 to 1 1 kV ・Output current ? 1 1.5 mA Max ・ Output voltage Ripple
Less than 0.01%(RMS)of the maximum output voltage in frequencies less than 1 MHz
・ Output control voltage ? 1 1 V to 110 V
・ Supply voltage ? 1 12 V ±10% ・ Current consumption 0 0.25A max ・ Package dimensions ? 60mm( ) ) ×41mm(H) ×20mm(D)
TOPICS High Voltage Power Supply Module Operating in Magnetic Field. MODELT TU-31334 Features ・The high voltage power supply module can
operate in a strong magnetic field. ・ The high voltage supply module has
employed a third order longitudinal mode Rosen-type piezoelectric ceramic transformer.
・ The module is jointly developed by NF and ICEPP, University of Tokyo.
Specifications (preliminary) ・ Input voltage 5 5V ・ Output voltage 2 2500V to 4000V ・ Load resistance 1 10 MΩ ・ Efficiency 6 60% ・ Magnetic field 1 1.5 tesla ・ Dimensions 200mm(W)×150mm(H)×40(D) mm mmax
Specifications are subject to change without notice. Manufactured by NF Corporation Office :6-3-20,Tsunashima Higashi, Kohoku-ku, Yokohama, Japan
High Voltage Power Supply Module
New product introduction
Problem About Supply of Transformer
• A company is reluctant to resume production of third order Rosen-type transformer.
• The company proposes an alternative transformer compatible with current production line.
• Samples of the alternative transformer, which is newly developed, arrived last month.
• The alternative transformer is expected to show better performance.
High Voltage Power Supply Module for Commodity Use
• High voltage power supply module incorporating the ceramic transformer is produced for commodity use
• The module provides a fixed high voltage of 4 kV with an output current up to 160 A at an efficiency of 70 %.
• The inductance being implemented by a air-core coil, the module can be operated in magnetic field.
• Price is a few dollars
Third Order Longitudinal Mode Piezoelectric Ceramic Transformer
High Amplitude Ratio ( Turn Ratio ~ 40) Low Internal Resistance ( 0.25 )
Equivalent Circuit of Piezoelectric Transformer And its Parameters
Amplitude Ratio as Function of Frequency and Load Resistance
Resonance Shown by Transformer Loaded with 100 k
High Voltage Power Supply ModuleKept Under Control of Network
Module is interfaced by Neuron chipFunction of module under control of Neuron chip is controlled via network Turn on and off module
Set of output high voltage
Recovery from feedback breakdown
Output current monitor
Components of High Voltage Power Supply Module
• Reference Voltage 0V ~ 4V
• Error Amplifier• Voltage-Controlled Oscillator (VCO)• Driver Circuit• Piezoelectric Transformer• Cockcroft-Walton (CW) Circuit three stages
• Divider resistor 1 : 1000
• Circuit for Network Control
Output high voltage is stabilized by utilizing the frequency dependence of amplitude ratio
Amplitude and Phase of Transmission Path From Output of Error Amplifier to Output of CW Circuit With Load of 6 M
Protection Utilizes Breakdown of Feedback
Setup for
Measurement
Output voltage versus driving frequency for load of 20 M with supply voltages from1 V to 3.5 V by stepped at 0.5 V.
Output voltage is plotted against driving frequency for a load of 10 M and various supply voltage.
Output voltage versus driving frequency for a load of 4.7 M with various supply voltages
Amplitude Ratio of Ceramic Transformer
When load is 20 M, an equivalent resistance of the load viewed from the input of the CW circuit is about 200 k. So the amplitude ratio of the ceramic transformer is expected to be about 120 at the resonance frequency
In practice, the amplitude ratio is found to be more than eighty around the resonance frequency.
LonWorks Node for Module
Output H.V. vs. VCO Frequency for Several Supply Voltages
Efficiency. vs. VCO Frequency for Several Supply Voltages
Efficiency vs.Output H.V. for Several Supply Voltages
• The efficiency does not depend on the supply voltage
• The efficiency depends mainly on the VCO frequency.
• Dependence of the efficiency on the VCO frequency is defined by the inductance