This is an electronic device that can provide a stable DC power supply to the load. Most DC stabilized power supplies are AC power supplies. Even if the voltage of the AC power supply or load resistance changes, the DC output voltage of the regulated power supply remains stable. With the development of electronic equipment in the direction of high precision, high stability and high reliability, the DC stabilized power supply puts forward high requirements on the power supply of electronic equipment.
1. The basic functions of DC stabilized current power supply
1. The output voltage value can be set arbitrarily, and it can work normally when it is lower than the rated output voltage value.
2. The steady-state current value of the output current can be set arbitrarily, and it works normally when it is lower than the rated output current value.
3. The steady-state and steady-state current status of the DC power supply will automatically switch, and there will be corresponding status displays.
4. The output voltage and current value must be accurately displayed and identified.
5. For DC power supplies that require accurate output voltage and current values, multi-turn potentiometers and potentiometers for fine-tuning voltage and current or direct digital input are usually used.
6. A complete protection circuit is required. Even if the output terminals are short-circuited and become abnormal, the regulated DC power supply should not be damaged. After the abnormal situation is resolved, it will operate normally.
2. Precautions when using DC stabilized current power supply
1. First, gradually adjust the "coarse adjustment" button according to the required tension, and then gradually adjust the "fine adjustment" button to ensure correct fit. For example, if you need to output a 12V voltage, you must set the "Coarse adjustment" button to 15V, and then set the "Fine adjustment" button to 12V, otherwise it will not reach 12V, and the maximum output voltage will not reach 12V.
2. Set the required voltage, and then reconnect it to the load.
3. If you need to change the "coarse adjustment" gear during operation, you must first disconnect the load, set the output voltage to the desired value, and then connect the load.
4. If the load is short-circuited or overloaded during operation, please disconnect the load first, and then press the "recover" button or turn off the power and then turn it on again to restore the voltage to the normal operating state. Connect after troubleshooting the loading.
5. When power supply units with different nominal currents are connected in series, the output current must correspond to the nominal value of the minimum nominal current.
6. Each power supply has a measuring head, which is used to display the output current or output voltage of the channel under different A/V states. It is usually placed in the voltage indication state.
7. Each channel has two output connectors, red and black. The red connection means "+", the black connection means "-", and the black connection with the black symbol "earth" in the center of the control panel means the connection. Connect to the shell and connect to each socket. One output has no electrical connection and is only used as a safety wire. It is easy to understand that the symbol "grounded" means grounding, and "+" and "-" indicate the positive and negative output power that powers the operational amplifier with double power.
8. Two voltages can be connected in series. Simultaneous use is prohibited. Since the power supply is a power supply device, the output terminals cannot be short-circuited for a long time.