Invention Grant
- Patent Title: Circuit for generating a control current
- Patent Title (中): 用于产生控制电流的电路
-
Application No.: US13040733Application Date: 2011-03-04
-
Publication No.: US08258858B2Publication Date: 2012-09-04
- Inventor: Erwin Spits
- Applicant: Erwin Spits
- Applicant Address: DE Munich
- Assignee: EPCOS AG
- Current Assignee: EPCOS AG
- Current Assignee Address: DE Munich
- Agency: Slater & Matsil, L.L.P.
- Priority: EP08166350 20081010
- Main IPC: G05F1/10
- IPC: G05F1/10
Abstract:
A circuit includes a supply voltage and a control current line including two resistors. A sink current line branches off from the control current line between the resistors. A current sink transistor has an emitter that is connected to the sink current line and a collector that is connected to ground via a first further resistor. At least one reference transistor has an emitter that is connected to its base, to the supply voltage via a second further resistor and to the base of the current sink transistor. The collector of the reference transistor is connected to ground or to an emitter of a further reference transistor, which is switched in a manner similar to the first reference transistor.
Public/Granted literature
- US20110210714A1 Circuit for Generating a Control Current Public/Granted day:2011-09-01
Information query
IPC分类:
