DOA Series
松定电源放大器Ultra High Speed Response Four-Quadrant Bipolar Power Supplies 日本松定
Ultra High Speed Response Four-Quadrant Bipolar Power Supplies
Wonder Broadband / High Speed Response of DC to MAX. 1MHz
The max. current can be outputted also at the time of DC output
The option which can switch output range is available
Stable operation is possible regardless to loads with massive broadband and high speed response of DC to 1MHz Maximum and four-quadrant output.
DOA series are four-quadrant bipolar power supplies realized broadband and ultra high speed response of DC to 1MHz maximum.
They are best fitted to transient response tests using effectively this feature of massive high speed response.
And, with the four-quadrant behavior usable as DC power supplies or DC electric loads, they are applicable to various loads such as inductive loads as transformer, capacitive loads as capacitor or motors, various secondary batteries or piezo elements.
They are products with excellent general-purpose property able to output maximum current at DC output.
Feature
High speed response of DC to 1MHz or 500kHz is realized.
Four-quadrant behavior possible to source and sink current.
DC bias function is equipped as standard.
It is possible to output maximum current at DC output.
Reassurance and safety design equipped overvoltage protection, overcurrent protection and output short-circuit protection.
Major Applications
Evaluation tests for inductive loads such as coils and transformers.
Voltage fluctuation tests for electric elements of cars.
Evaluation tests for capacitive loads such as capacitors or display panels.
Ripple test for capacitors.
Evaluation tests of various motors.
Evaluation tests of relative equipment to solar batteries.
Drive of piezo elements. ETC.
Lineup
About protection functions
OVP (Overvoltage Protection)
This unit is equipped overvoltage protection and output voltage is limited about 120% of rating and the load is protected at abnormal.
OCP (Overcurrent Protection)
This unit is equipped overcurrent protection and output current is limited about 120% of rating and the power supply and the load are protected at overload.
High Speed Eddy Current Protection
This unit is equipped two kinds of eddy current protections,high speed eddy current protection circuit to limit pulse current and overcurrent protection circuit to limit stationary current.
The above mentioned overcurrent protection is to limit stationary current and its response speed is about 1msec. Another circuit to limit current of high speed response type is added separately and it restricts pulse current to about 2 times of rating at rectangular wave or capacitive load.
About the range of output
This unit is a bipolar power supply possible to operate in four-quadrant behavior. It is able to source or sink current in the ranges as shown on the following figure.
Options
As for characteristics of amplifiers
Rising time :
(step time) : responsiveness may be expressed with rise time.
(see right figure)
Rise time for amplifiers in fc (Hz) of response time (-frequency band) is calculated with following equation generally. tr≒0.35 / fc
Decay time tf is equal to tr.
Frequency band : to 1MHz, tr = tf ≒0.35μs
: to 500kHz, tr = tf ≒0.7μs
Response speed :
When accurate output wave is required, please select an amplifier in sufficiently higher frequency band than applied one.
Generally, speedy frequency band as 3 to 5 times of applied frequency for sine wave and 10 times for rectangular wave are required.
If frequency band is in lacking, as not only output amplitude is reduced but also phase difference between input and output become larger,consideration to utilize it monitoring output wave is required.
For Capacitive Loads :
In case of capacitive load, oscillation may be caused.
If so, please insert a power resistance to the output in series.
And, in capacitive load, please attend to that frequency band is limited by the resistance and capacity inserted in series
For Induced Loads :
At CC mode, oscillation may be caused by inductance of induced loads.
If so, please connect C-R straight circuit between output terminals so as not to cause oscillation.
Introduction of Related Product
Please inquire to our sales branch nearest for you about the detail of products.
Integrated Function Generator Type Four-quadrant Bipolar Power Supplies
DOPF series are four-quadrant bipolar power supplies improved spectacularly in their usability by being installed the function generator. It is able to output required waves with only simplified operation from the front panel and they have become more usable and convenient. Not only wave generation, but also it is able to set memory and protection functions. Moreover, as they are equipped control signal output function for parallel operation as standard, complete synchronized operation is enabled at high speed operation. And as measurement function is fulfilled and it is enabled to measure not only DC values or AC values (ms) but also the maximum value and minimum value, measuring instruments ever required before are made redundant. Therefore various experiments and evaluation tests have been enabled with 1 unit of DOPF only.
It is possible to generate distortion less waves. “Sine, Rectangular and Triangle waves in DC to 30kHz”
Possible to set individually DC and AC. Excellent usability is realized in combined with the simplified operability.
External control is enabled by using option for communication. “USB, Ethernet, RS-232C, RS-485”
High Speed Four-quadrant Bipolar Power Supplies
DOP series are four-quadrant bipolar power supplies possible to source and sink electric power. They are applicable to two modes of constant voltage and current. Light weight as a half of conventional one is realized. It is able to output proportional waves to input such as sine, triangle, saw-tooth and rectangular wave in high speed response despite of compact size. We maintain high reliability with all solid state for all models and prepare plenty of line-up with total 36 models to cover wide output band.
They are applicable to loads for evaluation of solar battery panels or the power supply for evaluation of power conditioners.
They can be utilized as a high speed response power supply or electronic loads with their four-quadrant behavior.
Their high power and broadband are realized and they are best fitted to transient response tests and so on.
DC bias is equipped as standard. (settable to -100% to +100%)
We have developed, manufactured and sold by own high performance power supplies for various fields such as DC power supplies, high voltage power supplies, AC power supplies and piezo driver, other than these high voltage amplifiers or four-quadrant bipolar power supplies.
We prepare individual detailed catalogues. Please ask them our sale staff without any hesitations.
