Temperature compensation of the symmetrical power supply 7812 F007C

Posted on Mar 28, 2007

As shown in Figure it is a temperature compensated with a negative voltage to follow the positive changes in the symmetrical voltage integrated power supply. This circuit is ch

Temperature compensation of the symmetrical power supply 7812 F007C
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aracterized by: three-terminal regulator regulator circuit is connected with two of the same type transistors, using the temperature characteristics of the transistor PN junction temperature compensation with each other, so that a positive voltage output of the power supply has a high temperature stability and accuracy. Utilize the op amp and F007C regulator BG4 (3AD30B), the negative voltage accurately tracks the positive voltage changes, so that the positive and negative output voltage strictly symmetrical, and has a high accuracy. The power supply is suitable for the symmetry of the positive and negative voltage requirements for higher electronic circuits.

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