Author - Bill Reeve

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Bill Reeve	Write for Electronic Design
Bill Reeve is an engineer at Lockheed Martin Corp., Sunnyvale, Calif. He holds an MS in structural engineering from the University of California at Berkeley and an MSEE from Santa Clara University, Calif. Email address: billreeve@yahoo.com
2 results found for Bill Reeve, displaying items 1 - 2

October 8, 2009 [Ideas For Design]
Turn A Compensated Current Sink Into A Common Emitter (CE) Amplifier
By adding only a few components, you can turn a temperature- and beta-compensated current sink into a common-emitter (CE) amplifier that maintains a stable biased operating point. This architecture is useful for building stable and device-tolerant BJT Class A amplifiers. The circuit in Figure 1 sinks a constant current (ICE3) through Q3’s collector and emitter. This design is balanced so changes in Q3’s...

July 9, 2009 [Ideas For Design]
Simple Quadrature Decoder Suits Rotary Encoders
Rotary quadrature encoders often are used to command digital potentiometers or digital controllers, and quadrature decoding is typically performed in a programmable device (like an FPGA or microcontroller). This design performs quadrature decoding with commonly available components, and it comes in handy when you need to use a quadrature encoder in the lab or in a simple product. This design uses a manually turned contact encoder. Contact encoders are...

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