ECR - ITM ESD Driver Compensation Modification

Document #:

LIGO-E1600260-v1

Document type:

E - Engineering documents

Abstract:

Add a 4.7pF capacitor into C25 of the ITM ESD Driver Main Board in the high-voltage bias section of the circuit.

This capacitor is there to ensure stability of the HV stage, and to preclude a ~175kHz oscillation that has been seen on some units.

Capacitor Manufacturer: American Technical Ceramics
Manufacturer’s Part Number: 800B4R7BT500XT
DigiKey Part Number: 1284-1299-1-ND

Files in Document:

• PDF Version (E1600260_ITD_ESD_BiasOscMod_ECR-v1.pdf, 48.2 kB)

Other Files:

• Word Version (E1600260_ITD_ESD_BiasOscMod_ECR-v1.docm, 31.3 kB)

Topics:

• Sensing and Control

Authors:

• Rich Abbott

Keywords:

ECR

Related Documents:

• LIGO-D1600092: ITM Low Voltage Low Noise ESD Driver Chassis Assembly Drawing
• LIGO-D1600122: ITM ESD Driver Main Circuit Board