The low-temperature constant temperature tank stabilized power supply produced according to these requirements, its output voltage, current and its adjustment range, etc., is called the characteristic index of the power supply; its voltage or current stability, ripple, etc., is called the power supply technology. Indicator or quality indicator. The characteristics of the power supply are very simple, and the technical specifications of the power supply have a certain meaning.
Low temperature bath characteristic index
(1) Maximum output current
It mainly depends on the maximum allowable dissipated power and the maximum allowable operating current of the main regulator.
(2) Output voltage and voltage adjustment range
This is determined according to the requirements of the load. If a device with the same power supply is required, the adjustment range of the regulated power supply is preferably smaller, and the voltage value cannot be changed once it is set. For commercial power supplies, the output range is from zero volts, the voltage regulation range is wider, and continuously adjustable.
(3) Efficiency
The regulated power supply itself is a transducer, and there is energy loss during energy conversion, which has the problem of conversion efficiency. To improve efficiency, it is mainly to reduce the power consumption of the adjustment tube, which not only saves energy, but also improves the operational reliability of the r power supply.
(4) Protection characteristics
In the DC stabilized power supply, when the load is overloaded or short-circuited, the adjustment tube will be damaged. Therefore, there must be a fast-responding overcurrent and short-circuit protection circuit in the power supply. In addition, when the regulated power supply fails, the output voltage is too high, which may damage the load. Therefore, an overvoltage protection circuit is also required.
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