Patent ID: 11934216
Assignee: HEFEI AICHUANGWEI ELECTRONIC TECHNOLOGY CO., LTD.
Field: Basic communication processes (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 1:
2. The constant current generation circuit according to claim 1, wherein the negative temperature change rate current generation circuit (21) comprises triodes Q1, Q2, Q3 and Q4 connected with each other, wherein a drain of the triode Q1 is connected with the resistor R2 and a gate of the triode Q1; a source of the triode Q1 is connected with a drain of the triode Q2 and a gate of the triode Q3; a source of the triode Q2 is grounded and connected with a source of the triode Q3 via a resistor R4; a gate of the triode Q2 is connected with a source of the triode Q4; a drain of the triode Q3 is connected with the source of the triode Q4; a gate of the triode Q4 is connected with the gate of the triode Q1; and a drain of the triode Q4 is connected with an input end of the precision adjustment and output circuit.