Showing posts with label high. Show all posts
Showing posts with label high. Show all posts
Friday, December 20, 2013
Build a 13KV High voltage Power supply Circuit Diagram
This 13KV High voltage Power supply Circuit Diagram has an inverter around Q1 that supplies 150-V pulses to the converter of SCR1 and C2. The output of ?2 is a 4.5-kV pulse that is multiplied by the voltage-tripler network (right) to produce 13.5 kV. R1 is a 3k to 500K CT transistor audio transforfiler, L2 is a flash tube trigger transformer with a 6-kV secondary.
13KV High voltage Power supply Circuit Diagram
Sunday, April 7, 2013
High Voltage Transistor MJE13005 Datasheet Application Notes
The article relates us with the important features and specifications of MJE13005 device, which is a high voltage, high speed transistor, applicable for many different electronic circuit designs.
Lets try to understand the pin outs and technical specs of the device:
Main Features
Package - TO-220AB (typically recommended)
Type - NPN Silicon
Power Handling Capaciy - 75 Watts,
Maximum Current Handling Capacity - 4 Amps
Maximum Voltage Handling Capacity - Not less than 400V
Main Application Areas
High voltage circuits, switch mode power supplies, motor control, switching regulators, inverters, solenoid drivers.
Maximum Tolerable Ratings
Maximum sustainable collector to emitter voltage = 400V DC (700V DC pulsed)
Maximum tolerable emitter to base voltage = 9V DC
Maximum sustainable collector to emitter current = 4 amps (8 amps pulsed)
Maximum continuous base current = 2 amps (4 amps pulsed)
Technical Specifications
Base emitter saturation voltage = typically 1.2V
DC current gain (hFE) = typically around 20 to 60
Application Circuits
A couple of application circuits using the MJE13005 have been discussed in the following articles:
Simple SMPS Circuit
Simple Transformerless Power Supply
Lets try to understand the pin outs and technical specs of the device:
Main Features
Package - TO-220AB (typically recommended)
Type - NPN Silicon
Power Handling Capaciy - 75 Watts,
Maximum Current Handling Capacity - 4 Amps
Maximum Voltage Handling Capacity - Not less than 400V
Main Application Areas
High voltage circuits, switch mode power supplies, motor control, switching regulators, inverters, solenoid drivers.
Maximum Tolerable Ratings
Maximum sustainable collector to emitter voltage = 400V DC (700V DC pulsed)
Maximum tolerable emitter to base voltage = 9V DC
Maximum sustainable collector to emitter current = 4 amps (8 amps pulsed)
Maximum continuous base current = 2 amps (4 amps pulsed)
Technical Specifications
Base emitter saturation voltage = typically 1.2V
DC current gain (hFE) = typically around 20 to 60
Application Circuits
A couple of application circuits using the MJE13005 have been discussed in the following articles:
Simple SMPS Circuit
Simple Transformerless Power Supply
Saturday, April 6, 2013
High Voltage Converter 90V From 1 5V
The circuit shows one way of obtaining a voltage of 90V from a 1.5V battery supply. The LT1073 switching regulator from Linear Technology (www.linear-tech.com) operates in boost mode and can work with an input voltage as low as 1.0 V. The switching transistor, which is hidden behind connections SW1 and SW2, briefly takes one end of choke L1 to ground. A magnetic field builds up in the choke, which collapses when the transistor stops conducting: this produces a current in diode D1 which charges C3. The diode cascade comprising D1, D2, D3, C2, C3 and C4 multiplies the output voltage of the regulator by four, the pumping of C2 causing the voltage developed across C4 via C3, D2 and D3 to rise.
Finally, the regulator control loop is closed via the potential divider (10 MΩ and 24 kΩ). These resistors should be 1 % tolerance metal film types. With the given component values, fast diodes with a reverse voltage of 200 V (for example type MUR120 from On Semiconductor www.onsemi.com) and a choke such as the Coilcraft DO1608C-154 (www.coilcraft.com) an output voltage of 90 V will be obtained. The output of the circuit can deliver a few milliamps of current.
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Finally, the regulator control loop is closed via the potential divider (10 MΩ and 24 kΩ). These resistors should be 1 % tolerance metal film types. With the given component values, fast diodes with a reverse voltage of 200 V (for example type MUR120 from On Semiconductor www.onsemi.com) and a choke such as the Coilcraft DO1608C-154 (www.coilcraft.com) an output voltage of 90 V will be obtained. The output of the circuit can deliver a few milliamps of current.
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