The level shift circuit diagram completed by constant flow source

Published:2012/8/12 21:54:00 Author:Ecco | Keyword: level shift , constant flow source | From:SeekIC

The DC internal resistor Ro of constant current source is very small, AC internal resistor ro is great, when the R1 》 Ro and R1 《 ro, the DC level U2 of output end is much lower than DC level U1 of the input end, namely U2 《 U1. AC voltage u2 of output end decreases little from input AC voltage u1, that is, u2 ≈ u1. Therefore, the circuit decreases DC level under the circumstance without losing AC voltage.



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