bird PIEZO SYSTEMS, INC.
65 Tower Office Park    Woburn,    MA   01801   USA
Tel: 781-933-4850    Fax: 781-933-4743    email: sales@piezo.com

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LOW COST PIEZO LINEAR AMPLIFIER


low cost amplifier
Part Number:   EPA-008-1
Input Adapter:
115VAC/60Hz
Output:   ±180 Vp / ±30 mA
Price
Part Number:   EPA-008-2
Universal Input Adapter:
Output:   ±180 Vp / ±30 mA
Price
100-240VAC / 50-60Hz
ROHS:
ROHS
Product compliant.
Description: The EPA-008 is a high voltage linear amplifier with an integral high voltage power supply. It is designed to be small in size and convenient for both bench top experimentation and OEM installation. It utilizes a single 15 VDC power input which can be provided directly, or by using either the 115VAC/60Hz or 100-240VAC/50-60Hz Universal power adapter (provided). It accepts a +/- 10 Vpeak ground referenced input signal and produces a +/- 180 Vpeak ground referenced output drive signal.

It is designed to be used as a high voltage drive source for various piezoelectric actuating devices operated from DC to the low audio frequency range.

Typical Application Diagrams
FEATURES
Input Power: For bench top experimentation, where minimum setup time and flexibility of amplifier location are advantageous, an AC adapter is provided for DC input power. Two types are offered:
115VAC Plug
A 115VAC/60Hz to 15VDC is included with the EPA-008-1.
230VAC Plug
A 100-240VAC/50-60Hz to 15VDC (Universal Adapter) is included with the EPA-008-2. One end of the power cord plugs into the adapter and the customer supplies the plug for the other end.
For OEM or permanent installation, a set of screw terminals is provided for DC input (13 to 18VDC) power.

Signal Input: Input to the amplifier is made by connecting wires to the screw terminal connector on the I/O panel at one end of the unit. This is a ground referenced ± 10 Vpeak low voltage input.

High Voltage Output: A ground referenced output from the amplifier appears at the two screw terminals on the I/O panel.

Loads: The EPA-008 is designed for driving piezoelectric actuator loads.

Input and Output Protection: Piezo loads present special problems to electronic drivers. The EPA-008 provides input and output protection to take care of all shorting, turn-on, turn-off, and load generated voltage occurrences which can damage either the amp or your actuator.

ESTIMATING THE CURRENT REQUIREMENT OF A PIEZOELECTRIC ACTUATOR
To estimate the peak current requirement of a piezoelectric actuator, solve the appropriate equation:
Ipeak(in Amperes)  =  2 π f C Vpeak
(driven with a sine wave)
Ipeak(in Amperes)  =  4 f C Vpeak
(driven with a triangle wave)
Ipeak(in Amperes)  =  C dV / dt
(driven with a square wave)
Where f is the maximum operating frequency in Hertz, C is the capacitance of the piezo device in Farads, dt is the square wave rise time, and Vp is maximum peak drive voltage. The amplifier must be able to supply Vp, lp and f simultaneously.
SPECIFICATIONS     Values to be used as guidelines.
ELECTRICAL
  Maximum Voltage
  ± 180 volts peak
  Maximum Current
  ± 30 mA peak continuous
  Output Power
  5.4 watts peak
  Frequency Range
  DC to 1.5 KHz
  Voltage Gain
  Fixed: 20X ± 5%
  Maximum Input Voltage   (AC plus DC)
  ± 10 volts peak
  Maximum DC Component
  ± 10 volts DC
  Input Coupling
  DC coupled
  Input Impedance
  10K ohm
  Output Coupling
  DC coupled
  Output Ripple
  typically < 35 mVrms, with input shorted
  Power Source
  + 13 VDC to +18 VDC, 750 mA
  Current Draw
  400 mA no load; 700 mA full load
  Circuit Protection
  Overload, short circuit and thermal protection
MECHANICAL
  Indicators
  Green LED "on" indicator
  Cooling
  Internal brushless DC fan
  Weight
  256 g (.56 lb)
  Dimensions
  6.2" (157mm) long x 3.3" (84mm) wide x 1.8" (46mm) high
PEAK OUTPUT VOLTAGE vs. FREQUENCY FOR VARIOUS CAPACITIVE LOADS
Steady state sinusoidal waveforms,
Temperature = 25 ° C
volts vs freq
EPA-008 APPLICATION DIAGRAMS
Open loop DC drive for positioning pdf icon
Open loop AC drive for sound or vibration source pdf icon
Closed loop position control pdf icon
Wiring the EPA-008 for variable gain pdf icon
Powering the EPA-008 from a 24 V DC supply using zenner diodes pdf icon
Powering the EPA-008 from a 24 V DC supply using a voltage regulator pdf icon
Powering the EPA-008 from a 12 V car battery pdf icon
Typical No-Load frequency response pdf icon
PRICING INFORMATION   USD each
NOTE: Choose "add to basket" to proceed to the shopping cart and select the quantity. Quantity pricing will be automatically calculated.
Part Numbers
Description
1 pc.
3 pcs.
25 pcs.
100 pcs.
EPA-008-1
±180 Vp / ±30 mA;   (115VAC/60Hz Input Adapter)
$1088
$1015
$906
$846
EPA-008-2
±180 Vp / ±30 mA;   (with Universal Input Adapter)
$1,148
$1075
$955
$888

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