Q67000-A5020 查看數據表（PDF） - Siemens AG
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Q67000-A5020 Datasheet PDF : 20 Pages
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TDA 4605-2
In the different load ranges the switched-mode power supply (SMPS) behaves as follow:
No load operation
The power supply is operating in the burst mode at typical 20 to 40 kHz. The output voltage can be
a little bit higher or lower than the nominal value depending of the design of the transformer and the
resistors of the control voltage divider.
Nominal operation
The switching frequency is reduced with increasing load and decreasing AC-voltage. The duty
factor primarily depends on the AC-voltage.
The output voltage is only dependent on the load.
Overload point
Maximal output power is available at this point of the output characteristic.
Overload
The energy transferred per operation cycle is limited at the top. Therefore the output voltages
declines by secondary overloading.
Semiconductor Group
55
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