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IC3600PTJA1 - LVDT Transformer Card is available in stock which ships the same day.
IC3600PTJA1 - LVDT Transformer Card comes in UNUSED as well as REBUILT condition.
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TECHNICAL SPECIFICATIONS:
Part Number: IC3600PTJA1
Manufacturer: General Electric
Series: Mark I & Mark II Speedtronic
Functional Designation: LVDT Transformer / Demodulator Interface Card
Circuit Type: Discrete Solid-State Analog Architecture
Component Technology: High-reliability through-hole manufacturing
Primary Board Components: Precision metal-film resistors, ceramic & tantalum signal capacitors, discrete BJTs, and signal conditioning isolation transformers
Channel Support: Single-channel LVDT sensor interface per card
Interface Topology: 51-Pin double-sided gold-plated edge connector
Calibration Mechanism: Onboard precision multi-turn potentiometers for Zero and Span optimization
Operating Temperature: 0 to 60 Degrees Celsius
Availability: In Stock
FUNCTIONAL DESCRIPTION FOR IC3600PTJA1:
The IC3600PTJA1 is an LVDT Transformer Card designed and manufactured by General Electric as part of the first-generation Mark I and Mark II Speedtronic turbine control systems. This specialized analog circuit board serves as the electromechanical conditioning interface between field-mounted Linear Variable Differential Transformers (LVDTs) and the core turbine control loops. It plays a critical role in monitoring and regulating valve positions, guide vanes, and fuel stroke actuators.
ANALOG EXTRACTION AND DEMODULATION
The board is designed to interface directly with LVDT sensors, which provide accurate linear position feedback through a moving ferromagnetic core. The IC3600PTJA1 supplies the high-frequency AC excitation voltage required by the primary winding of the LVDT. It then captures the resulting AC voltages from the secondary windings, passing them through an analog demodulator and filtering circuit to convert the phase and amplitude variations into a highly accurate, stable DC voltage profile proportional to physical displacement.
ONBOARD FIELD CALIBRATION MATRIX
The card is populated with top-accessible, high-accuracy multi-turn variable trim pots. These allow precise field calibration by plant technicians. The pots calibrate the excitation amplitude delivered to the primary transformer winding, align the electrical null point of the circuit with the physical mechanical neutral center of the LVDT core (Zero), and scale the conditioned analog output slope to match standard rack differential amplifier targets (Span).
VALVE POSITION REGULATION
In the Mark I and Mark II control schemes, precise position feedback is vital for governing steam valves or gas turbine fuel control systems. The rectified DC signal generated by the IC3600PTJA1 is routed through the backplane edge connectors to the downstream differential amplifier and summing cards. This seamless feedback loop ensures that the actual position of the turbine valves continuously aligns with the controller's demanded setpoints.
MAGNETIC ISOLATION ARCHITECTURE
The IC3600PTJA1 relies on internal, board-mounted isolation transformers. These components establish a physical galvanic barrier between the field-side transducer cabling and the sensitive internal control bus backplane. This traditional isolation strategy clamps common-mode noise and protects the turbine's core logic from field wiring faults or inductive cross-talk.
WHY BUY FROM WOC:
World of Controls is a specialized global authority in the lifecycle extension of legacy GE Mark I & II ecosystems, providing the IC3600PTJA1 in both UNUSED and REBUILT conditions to eliminate operational latency. Our vintage testing facility utilizes specialized analog signal generation to verify LVDT excitation outputs, demodulator accuracy, and edge-pin continuity. By partnering with WOC, you secure hardware for peak deterministic performance, reinforced by 24/7 technical consultation and accelerated global logistics to keep your plant operational and efficient.
What is GE IC3600PTJA1?
The IC3600PTJA1 is a legacy LVDT (Linear Variable Differential Transformer) Transformer / Demodulator Interface Card engineered by General Electric for the Speedtronic Mark I and Mark II turbine control frameworks. It acts as an analog signal conditioner that delivers high-frequency AC excitation to a field LVDT sensor and decodes the incoming secondary signals into a stable DC voltage for precise actuator position feedback.
What turbine components rely on the feedback from this card?
This card typically processes position feedback from critical heavy-duty actuators, such as gas turbine fuel control valves, steam governing valves, or inlet guide vanes (IGVs).
Can this card be used in newer systems like the Mark V or Mark VIe?
No, the IC3600 series features a distinct physical edge-connector architecture and analog design built exclusively for the Mark I and Mark II control frames. Modern systems utilize integrated digital I/O packs for LVDT processing.
What adjustments can be made using the onboard potentiometers?
The onboard trim pots allow for field tuning of the excitation voltage amplitude, the circuit null point alignment (Zero), and the overall output voltage scaling (Span) to match the physical range of the valve stroke.
How is the IC3600PTJA1 mounted in the control cabinet?
It is designed as a slide-in circuit card that mates with a dedicated slot on the control rack backplane via a 51-pin double-sided edge-connector interface.
