The voltage stabilized power supply module is a power supply device that can provide stable AC or DC power to the load equipment. It is divided into AC voltage stabilized power supply and DC voltage stabilized power supply, and is mainly composed of power transformer, rectifier circuit, filter circuit and voltage stabilizer circuit.
The power transformer converts the mains power into the required voltage, the rectifier circuit uses a unidirectional conductor to convert the AC power into pulsating DC power, the filter circuit uses capacitors and inductors to convert the pulsating DC power into smooth DC power, and the voltage stabilizer circuit uses the adjustment of the circuit to stabilize the output voltage.
8 major indicators of the voltage-stabilized power supply module:
1. Output voltage range
Under the premise of meeting the working conditions of the voltage-stabilized power supply, the output voltage range for normal operation. The upper limit of this indicator is determined by the maximum input voltage and the minimum input-output voltage difference, and the lower limit is determined by the reference voltage value inside the voltage-stabilized power supply.
2. Output current range
The output load current range is also called the output current range. Within this range, the voltage-stabilized power supply must ensure that it meets the indicators given in the indicator specification.
3. Maximum input-output difference
Under the condition of ensuring the normal operation of the voltage-stabilized power supply, the maximum input-output voltage difference allowed is mainly determined by the withstand voltage indicator of the internal adjustment transistor of the voltage-stabilized power supply.
4. Minimum input-output voltage difference
Under the condition of ensuring the normal operation of the voltage-stabilized power supply, the minimum input-output voltage difference required.
5. Voltage Regulation
Voltage regulation refers to the quality index of the voltage regulation performance of the voltage regulated power supply, also known as the voltage regulation coefficient or stability coefficient. When the input voltage VI changes, the degree of stability of the output voltage VO of the voltage regulated power supply is usually expressed as the percentage of the relative change of the input and output voltages under the unit output voltage.
6. Current Regulation
Current regulation is the main indicator reflecting the load capacity of the voltage regulated power supply, also known as the current stability coefficient. When the input voltage remains unchanged, the ability of the voltage regulated power supply to suppress the output voltage fluctuation caused by the change of the load current (output current) is usually expressed as the percentage of the output voltage change value under the unit output voltage under the condition of the specified load current change.
7. Ripple Rejection Ratio
The ripple rejection ratio refers to the ability of the voltage regulated power supply to suppress the mains voltage introduced into the input end. When the input and output conditions of the voltage regulated power supply remain unchanged, the ripple rejection ratio is often expressed as the ratio of the input ripple voltage peak-to-peak value to the output ripple voltage peak-to-peak value. 8. Temperature stability Temperature stability is the percentage value of the relative change of the output voltage of the regulated power supply within the maximum change range of the regulated power supply operating temperature.
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变色卡
千斤顶
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