A301 High Voltage
Amplifier/ Piezo Driver and Modulator
A301 piezo Driver/Piezo Amplifier는 고전압 증폭기로서, 고전압에대한
증폭, 고속의 양방향 피에조 드리이브용, 또는 다양한 응용에 고전압 교류전압을
필요로 하는데 사용되어지고 있다.
Piezo Driver / Piezo Amplifier는 출력전압 ±175V (350V
ptp). 까지를 갖으며,
전류용량은 모델 A301 가 60 mA (100 mA peak)
A301 HS가s 100mA (150mA peak).
A301 주파수대역은 30 KHz이며, A301 HS는 200
KHz까지 가능하다.
slew rate of the A301 is 30V/uSec. compared to 250V/uSec for the
A301HS.
By connecting 2 amplifiers in series,
the output voltage may be doubled to 700Vptp .
저렴한가격
특징:
저렴하면서
사용이 용이.
적은
잡음.
낮은
왜곡
High
Slew rateup to 400 Volt/microsecond.
입력
보호회로High Voltage, On/Off.
출력보호  Shortcircuit, Power loss,Impedance.
Specifications:
A301 Piezo Amplifier
Amplifier section:  
Maximum Input
Voltage

± 10 V 

Maximum Output
Voltage 
± 175 V (350Vptp) 
Maximum
Current 
± 60 mA for A301, +/100mA for A301HS 
Bandwidth 
Into 1 K resistive load 
A301:DC  30 kHz, A301HSDC200KHz  
Output
Power 
16 Watt maximum 
DC
Gain 
20 
Coupling 
Input & Output: Direct DC Coupling 
DC
Offset 
Adjustable to ± 8 Volts + On/Off Switch 
Input
Impedance 
10 K 
Slew
Rate 
A301: 30V/ µSec, A301HS:250V/µSec 
Output Noise

4 mV PTP max. (0.8 mV RMS max.) (input shorted, 30 KHz. BW) 
Variable Gain Option:  010X
or 0  20X or 040X available. Please consult the factory regarding that option. 
Dimensions:  H= 90mm W=134mm L=235mm 
AC
Input  
Line Input
Voltage 
110/120 V, 60 Hz and 220/230 V , 50 Hz (Switchable by user) 
Line Input Current  0.5 A peak 
Applications:
2 개의 amplifier를 사용하여 두배의 출력을 얻을 수 있다.
직렬연결시
(+/ 350V into a floating load = 700V ptp).
Please note that both amplifiers must be floating (i.e. be careful not to
ground them via an oscilloscope etc.)
It is also possible to double or
tripple the output voltage by using a special transformer. Using a transformer
is possible only at
high frequency (over 10 KHz.) and it requires more
components to be added for balancing and proper termination of the
load.
Parallel connection is done by adding resistors at the input and
at the output. Please consult the factory for parallel connection.
Calulating the estimated current needed to drive your load:
In order to purchase the right amplifier to drive your load, you must calulate the peak current needed.  
For Capacitive load:  

Ipeak(A) = 2 π F C Vpeak (for a Sine Wave) Ipeak(A) = 4 F C Vpeak (for a triangular wave) Ipeak(A) = C dV / dt (for a square wave or sharp rise time) 
F=Maximum frequency
(Hz.) π=3.1415927 
C=Capacitance in Farads Vpeak=Maximum Voltage you need to drive your Load. 
For Resistive Load:  
I = Vpeak/R  
where R is the resistance of your load in Ohms. 
The current, Voltage and Frequency must be less or equal to the amplifier's specifications.
This amplifier is NOT SUITABLE for driving pure
inductive loads
(i.e. speakers, solenoides, electromagnets etc.)
You must connect your load with thick wires to minimize inductance (like speaker wires). Coaxial cable is not recommended for cables over 2m (6.5 Ft.) because the capacitance of the cable (1550 pF/Ft) will load your amplifier at high frequencies.
Example: The active impedance of a capacitive load is given by the equation: Z=1/(2*Pi*F*C) where Pi=3.1415, C in Farads, F in Hz.The user must check that under the peak operation Voltage, at maximum frequency, the current will not exceed 200mA (0.2A). Example: Operating Voltage is +/150V, Maximum Frequency=10KHz. Load is 10nF. Z=1/(2*3.1415*10,000*10EE9) =1592 Ohms. 150[V]/1592[Ohm] =94[mA] ===>The amplifier will drive that load at an amplitude of 150V (300V ptp). 