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SPECIFICATIONS:
Part Number: DS3800NAIB1
Manufacturer: General Electric
Series: Mark IV
Product Type: Multi-Voltage Buffer Card
Input Voltage: Levels 5 VDC
Input Current: 5 VDC
Input Isolation: 1500 VDC
Output Drive Capability: Up to 24 mA
Number of Channels: 16
Noise Immunity: ±1 kV
Power Supply Requirement: +5 VDC
Operating Temperature: 0 °C to +60 °C
Repair: 3-7 Days
Availability: In Stock
Weight: 0.5 kg
Country of Origin: United States
FUNCTIONAL DESCRIPTION:
DS3800NAIB1 is a Multi Voltage Buffer Card manufactured and designed by General Electric as part of the Mark IV Series used in GE Speedtronic Gas Turbine Control Systems. The Multi Voltage Buffer Card is designed to provide signal buffering and voltage level translation between field devices and control processors. It accepts multiple input voltage levels (commonly 5 VDC, 15 VDC, and 24 VDC) and conditions them into standardized logic-level outputs for reliable system interfacing. Each channel incorporates high-input impedance circuitry to prevent loading of the source signal and delivers low-impedance outputs capable of driving subsequent logic or relay stages. The buffering process ensures signal integrity by eliminating distortions, contact bounce, and noise interference.
The card also provides galvanic isolation between input and output circuits, typically through opto-isolators or transformer coupling, which protects the control system from transient voltages, surges, and ground potential differences. Multiple independent channels allow simultaneous interfacing of diverse field signals with varying voltage requirements. This combination of multi-voltage compatibility, buffering, and isolation makes the card critical in turbine control systems and other industrial applications where precise and noise-immune signal processing is required.
OPERATION:
The Multi Voltage Buffer Card receives discrete or analog signals at multiple field voltage levels (typically 5 VDC, 15 VDC, and 24 VDC) and conditions them for compatibility with the control system’s logic interface. Each input channel incorporates high-impedance circuitry to minimize source loading and filtering networks to suppress noise and transient disturbances. The signals are then routed through level-shifting stages that normalize the voltage to standardized logic thresholds.
Signal isolation is achieved through opto-isolators or equivalent galvanic isolation components, protecting ground potential differences and high-energy transients. The isolated signals are buffered by low-impedance output drivers capable of directly interfacing with processor inputs, relay drivers, or diagnostic circuits. All channels operate independently and simultaneously, ensuring reliable transmission of field signals with minimal propagation delay and high noise immunity.
COMPATIBILITY:
The Multi Voltage Buffer Card is compatible with control systems that require interfacing between field-level discrete or analog signals and processor-level logic. It supports input voltage ranges commonly used in industrial environments, including 5 VDC, 15 VDC, and 24 VDC, and provides corresponding logic-level outputs suitable for turbine control processors, PLCs, and DCS architectures.
The card is designed for seamless integration within GE Speedtronic turbine control systems (e.g., Mark IV, Mark V, Mark VI) and other industrial automation platforms utilizing multi-voltage field devices. It is fully compatible with standard I/O backplanes, terminal boards, and diagnostic test equipment specified for these systems. Its isolation and buffering functions ensure interoperability across mixed-voltage environments without risk of signal degradation or equipment damage.
WOC maintains the largest inventory of OEM replacement parts for GE Speedtronic Gas Turbine Control Systems, ensuring that our clients have access to high-quality, genuine components whenever needed. In addition to supplying unused OEM parts, we also offer comprehensive repair services for faulty boards, as well as reconditioned and rebuilt boards, all of which are backed by a full warranty to guarantee performance and reliability.
Our team of skilled engineers and automation specialists is available 24/7 to provide technical support, advice, and assistance with all your OEM and control system requirements. Whether you need parts for immediate replacement, system upgrades, or troubleshooting, WOC’s experts are ready to assist you with prompt, professional service. For detailed pricing, availability, or repair inquiries, please reach out to our team via phone or email, and we will ensure a quick and efficient response to meet your operational needs.
What is the primary function of the Multi Voltage Buffer Card?
The card provides buffering, isolation, and voltage level translation between field-level signals (5 VDC, 15 VDC, 24 VDC) and logic-level processor inputs. It ensures clean, noise-free, and compatible signals for turbine controllers or industrial automation systems.
What voltage levels can the card handle on the input side?
The card supports 5 VDC ±5%, 15 VDC ±10%, and 24 VDC ±10%. This covers most industrial field devices. Proper voltage matching is required to avoid damage.
What is the maximum current per output channel?
Each output can sink or source up to 24 mA. It is suitable for logic-level interfacing but not for high-power devices. This ensures safe operation with control electronics.
