Using a constant current source to complete the level shift circuit diagram
Source: InternetPublisher:公子李 Keywords: Displacement constant current source circuit diagram Updated: 2021/01/31
The figure shows the constant current source level shift circuit.
Figure constant current source level shift circuit
Since the DC internal resistance Ro of the constant current source is very small and the AC internal resistance ro is very large, when R1》Ro and R1<ro, the DC level U2 at the output end is much lower than the DC level U1 at the input end, that is, U2<U1. The AC voltage u1 at the output end is only slightly smaller than the AC voltage u1 at the input end, that is, u2≈u1. Therefore, it is satisfied to reduce the DC .
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