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Automatic Gain Control Amplifier (AGC) Driver
AGC-110  AGC-220
  • Automatically regulated feedback amplifier
  • Improves the amplitude stability of the device
  • Provides sine wave and TTL square wave reference signals
  • Trim pot for adjustment of 180° of the phase of the reference signal
  • Trim pot for amplitude adjustment


optical modulators / choppers / shutters
tuning fork (fixed frequency) choppers
variable frequency choppers
choppers / shutters
rotating wheel (variable frequency) choppers

optical chopping / modulating systems
optical chopping systems locked to ext. clock
optical chopping systems locked in master/slave mode

optical SAFETY shutters
laser safety (interlock) shutters
X-Ray (interlock) shutters

optical shutters, choppers and filters
optical shutters / choppers
optical choppers / shutters
filter selectors

optical scanners and deflectors
resonant (fixed frequency) scanners
beam deflectors

optical scanning / deflecting systems
- optical scanners locked to an external clock signal
- optical scanning systems to generate
a circle or an ellipse or to lock optical scanners
in phase or out of phase

- optical scanning systems to generate
a Raster Scan or Lissajous Patterns

- X,Y raster scanning systems
- 2-axis deflectors

ED Driver
AGC Driver
PLD-1C Driver
PLD-1S Driver
PLD-2C Driver
PLD-2S Driver
PLD-2SXY Driver
PLD-XYG Driver
DCH-40 Driver
DCH-50 Driver
DCH-60 Driver
DSH-10 Driver
DSH-20 Driver
DSH-35 Driver
DSH-65 Driver

other products
Filter selectors
Rotating Wheel Optical Choppers
photo diode amplifiers
o/e and e/o converters
fiber optic multiplexers
fiber optic video links
laser vibrometers
Photodiode Transimpedance Amplifier
Analog / digital fiber links
Optical time domain reflectometers
Optical spectrum detectors
Tuneable laser sources
Variable optical attenuators
Loss test sets
Fiber optic power meters
Light sources
Visual fault locators
Video probes
Fiber identifiers

Data Sheets

contact us


The AGC driver, a close loop feedback amplifier, operates a broad range of resonant optical scanners and resonant optical choppers at their natural frequency. The AGC driver has an Automatic Gain Control circuit which automatically regulates the motion amplitude of the resonant device. It improves amplitude stability by approximately 10 times compared to the unregulated drivers and provides precise control for a wide temperature range.


Both sine wave and TTL level square wave are provided as reference signals.
A trimpot control permits the user to adjust the phase of the reference signals with respect to the position of the mirror or the vane. The adjustable range is 180°.
A second trimpot provides amplitude adjustment in the range of 10% to 100% of the full amplitude.

The AGC type driver is available as:

Model AGC-PC A board level driver that requires an external +/-12V to +/-15V dc power supply.
Model AGC-110 or AGC-220 A cased driver (5.3" × 5.3" × 2") operating from a line voltage of 110V ac or 220V ac.
Model AGC-110/220 A cased driver (5.3" × 5.3" × 2") with a line switch selector for operating from a line voltage of 110Vac or 220Vac.
Each of these drivers can be available in the following feature:
-VC: A feedback amplifier to control the scan amplitude set by an external voltage input.
There is no additional cost for the added feature.

Input Voltage:
+/-12V to +/-15V dc, 0.3 Amp max. for the AGC-PC Driver
110V ac or 220V ac, 10W for AGC-110 and AGC-220
Frequency range: 5 Hz to 20 kHz Amplitude regulation: 0.01% or better typical (depending on temperature range)
Amplitude adjustment range: 10% to 100% of full amplitude
Reference output: Sine and TTL level square wave
Phase adjustment range: 180 degrees.
Voltage control input: 0V to 5Vdc input into 10K ohm for the AGC-VC.


TYPE [AGC-110, AGC-VC-110, AGC-220, AGC-VC-220, AGC-110/220, AGC-VC-110/220, AGC-PC, AGC-VC-PC]: Per customer's specifications.

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