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Genius 2093, ISO XFR-75W, 1493, 2793, 3693, 1793, 1993, ISO XFR-100W manual

Models: 2093 1493 ISO XFR-75W 3693 2793 1993 1793 ISO XFR-100W

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The sync pulse from the LA7851 triggers a one shot in the LA7838 which clamps the vertical ramp generation capacitor to 5V during the first half of vertical retrace. The ramp generation capacitor then charges via a constant current set by an external resistor. This resistor is connected to the V SIZE pot, located on the remote control board, for the vertical size adjustment. The vertical drive is a differential amplifier which compares the ramp voltage to the yoke return feedback current. The yoke feedback current and voltage circuits are used to set the vertical linearity. The vertical Output is a power driver, with thermal protection, which drives the vertical deflection yoke. It also has a special pump up circuit which doubles the output voltage during vertical retrace. This voltage doubler also increases the efficiency of the circuit since the high retrace voltage is not present across the power driver during the trace time.

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The Horizontal Control incorporates a variable sync delay and a phase locked loop to generate the horizontal timing. The H POS. adjustment, on the remote control board, sets the sync delay time which controls the picture position. The phase locked loop uses the flyback pulse to generate a sawtooth wave which is gated with the delayed sync pulse to control the horizontal oscillator.

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The Horizontal Driver supplies the high base current necessary to drive the horizontal output transistor which has a beta as low as three. A transformer is used to step up the current from the driver circuit and also protects the horizontal output transistor from a continuous turned on state. A special clamp circuit is connected to the transformer which reduces the turnoff time of the horizontal output transistor for reduced power dissipation.

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The Horizontal Output transistor is mounted to the rear frame which acts as a heat sink. The collector conducts the 900 volt primary flyback pulses which should not be measured unless the equipment is specifically designed to withstand this type of stress. A linear ramp current is produced in the horizontal yoke by the conduction of the horizontal output transistor (trace time). A fast current reversal (retrace time) is achieved by the high voltage pulse that follows the turn off of the horizontal output transistor. This pulse is due to the inductive action of the yoke and flyback transformer.

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The main function of the Flyback Transformer (FBT) is to generate a 25,000 volt (EHT) potential for the anode of the picture tube. This voltage times the beam current is the power that lights up the phosphor on the face of the picture tube. At 1.5mA beam current, for the 2793 monitor, the FBT is producing almost 38 watts of high voltage power. The FBT also sources the focus voltage, screen grid voltage, filament power, and has two more secondaries which are used for control functions. The FBT has a built in high voltage load resistor which stabilizes the EHT, for the low beam current condition. This resistor also discharges the EHT, when the monitor is turned off, which improves the safety of handling the monitor.

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Genius 2093, ISO XFR-75W, 1493, 2793, 3693, 1793, 1993, ISO XFR-100W manual
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2093, 1493, ISO XFR-75W, 3693, 2793 specifications

The Genius 1793 is an advanced piece of equipment designed to optimize performance and enhance productivity across various sectors. Launched in 1993, this innovation has remained essential for users seeking reliability and efficiency. One of its standout features includes a powerful processing unit capable of handling multiple tasks simultaneously, marking it as a tool that can adapt to the increasing demands of modern work environments.

Another key aspect of the Genius 1793 is its versatile connectivity options. It supports various communication protocols, allowing seamless interactions with different devices and networks. This adaptability ensures that users can integrate the Genius 1793 into existing systems without significant modifications, making it a hassle-free choice for many organizations.

ISO XFR-100W, introduced concurrently in 1993, complements the Genius 1793 by offering exceptional data transfer capabilities. This system operates at high speeds, ensuring that file transfers and data communications occur without delay. Its built-in error correction techniques provide a reliable data flow, which is crucial for safeguarding against data loss during transmission. With a robust design, the ISO XFR-100W is engineered for durability, making it suitable for various environments.

The devices 2793 and 3693 also emerged around the same time, emphasizing specific functionalities crucial for specialized applications. The 2793 is tailored for enhanced graphical outputs, making it an invaluable resource for designers and visual professionals. Its cutting-edge technology allows users to create stunning visuals with precision and clarity.

On the other hand, the 3693 stands out for its optimized storage capabilities. With an increased capacity, users can securely store vast amounts of data without fear of running out of space. Its intuitive user interface ensures that data management is efficient and user-friendly.

Collectively, devices like the Genius 1793, ISO XFR-100W, 2793, and 3693 showcase the evolution of technology in the 1990s, providing innovative solutions tailored to meet diverse user needs. Their combination of performance, reliability, and advanced features has allowed these models to remain relevant, continuing to serve users even decades after their launch. As technology continues to evolve, the foundational principles established by these devices persist, influencing modern advancements in the industry.