HIGH VOLTAGE 0-400V 22MA-600MA REGULATED POWER SUPPLY TCA785 Schematic Circuit Diagram
The power supply circuit for adjusting voltages between 0 and 400V, with a current setting ranging from 22mA to 1A (up to 600mA in most cases), is relatively straightforward using the TCA785 phase control integrated circuit. However, due to the high voltage involved, finding a suitable DCDC converter to power the TL081 op-amps can be challenging in the market. Although it might seem unnecessary, the author opted for TL081 op-amps with symmetric power supply of +12V and -12V, operating with a 15V DC voltage or 2x12V from an integrated power supply DCDC converter. If an additional transformer is not available, the circuit allows for the selection of an appropriate transformer with a tra2 transformer serving as an additional winding. The power supply circuit includes PCB designs, schematic drawings, and a list of materials.
TCA785, 400V, high voltage, adjustable power supply
ATTENTION 0-400V 22mA-600mA Adjustable Power Supply circuit operates with high voltage Caution Be careful of the condenser connections + – If you connect the poles backward, you may have large explosions at high voltage before operating the circuit Fused Electric Line, use protective goggles.
The TL081, TL081A, and TL081B are high-speed JFET input single operational amplifiers incorporating well matched, high-voltage JFET and bipolar transistors in a monolithic integrated circuit. The devices feature high slew rates, low input bias and offset currents, and low offset voltage temperature coefficient.
Features
- Wide common mode (up to VCC+) and differential voltage range
- Low input bias and offset current
- Output short-circuit protection
- High input impedance JFET input stage
- Internal frequency compensation
- Latch-up free operation
- High slew rate: 16 V/µs (typ)
Applications of TL081 IC
- Sample and Hold Amplifiers
- Peak Detectors
- Active Filters
- Comparators
- Interface in 5V TTL Systems and Other Low Supply Voltage Systems
- All Standard Operational Amplifier Applications
- Function Generators
How to use TL081 Op-Amp
An Inverting Amplifier Application circuit from the TL081 datasheet is given below. you only need two resistors to use TL081 as an inverting amplifier.
An inverting amplifier takes a positive/negative voltage on the inverting input pin and makes it a negative/positive voltage of the same magnitude. Output at the VOUT pin is feedback to input through the feedback resistor (Rf).