Shift register driver
Description: A 16V power supply can be synthesized using IN1692 rectifiers. A shift pulse input saturates the 2N2714, depriving the Darlington combination (2N2714 and 2N2868) of base drive. The negative pulse generated on the 15V line is differentiated to produce a positive trigger pulse at its trailing edge.
The described circuit synthesizes a 16V power supply utilizing IN1692 rectifiers, which are known for their efficiency in converting AC to DC. The configuration employs a shift pulse input that saturates the transistor 2N2714. This saturation condition prevents the Darlington pair, consisting of the 2N2714 and 2N2868 transistors, from receiving the necessary base drive. The Darlington configuration is typically utilized for its high current gain, making it suitable for applications requiring significant amplification.
As the 2N2714 is driven into saturation, it effectively cuts off the base drive to the second transistor in the Darlington pair, leading to a drop in output current. This process generates a negative pulse on the 15V line, which is crucial for the operation of the circuit. The negative pulse is then differentiated, typically using a capacitor and resistor network, to produce a positive trigger pulse at the trailing edge of the negative pulse. This trigger pulse can be utilized to initiate further control processes or to drive additional circuitry.
The differentiation process is essential for ensuring that the output pulse has a sharp rise time, which is critical for applications requiring precise timing or triggering. The overall design showcases a fundamental approach to power supply synthesis, emphasizing the importance of pulse generation and transistor saturation in achieving desired voltage levels and stability in electronic systems.A16 V power supply can be synthesized as shown using IN1692 rectifiers. A shift pulse input saturates the 2N2714 depriving the Darlington combination (2N2714 and 2N2868) of base drive The negative pulse so generated on the 15 V line is differentiated to produce a positive trigger pulse at its trailing edge.
The described circuit synthesizes a 16V power supply utilizing IN1692 rectifiers, which are known for their efficiency in converting AC to DC. The configuration employs a shift pulse input that saturates the transistor 2N2714. This saturation condition prevents the Darlington pair, consisting of the 2N2714 and 2N2868 transistors, from receiving the necessary base drive. The Darlington configuration is typically utilized for its high current gain, making it suitable for applications requiring significant amplification.
As the 2N2714 is driven into saturation, it effectively cuts off the base drive to the second transistor in the Darlington pair, leading to a drop in output current. This process generates a negative pulse on the 15V line, which is crucial for the operation of the circuit. The negative pulse is then differentiated, typically using a capacitor and resistor network, to produce a positive trigger pulse at the trailing edge of the negative pulse. This trigger pulse can be utilized to initiate further control processes or to drive additional circuitry.
The differentiation process is essential for ensuring that the output pulse has a sharp rise time, which is critical for applications requiring precise timing or triggering. The overall design showcases a fundamental approach to power supply synthesis, emphasizing the importance of pulse generation and transistor saturation in achieving desired voltage levels and stability in electronic systems.A16 V power supply can be synthesized as shown using IN1692 rectifiers. A shift pulse input saturates the 2N2714 depriving the Darlington combination (2N2714 and 2N2868) of base drive The negative pulse so generated on the 15 V line is differentiated to produce a positive trigger pulse at its trailing edge.
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