John Guy, applications manager at Maxim Integrated Products in Sunnyvale, Calif., received a BSEE from San Jose State University, California. Email address: John_Guy@maximhq.com
6 results found for John Guy, displaying items 1 - 6
March 26, 2009[Ideas For Design] Oscillator Delivers Four Multi-Phased, Equal-Amplitude Sine Waves
One application I recently dealt with needed multiple phases of sine waves, all of equal amplitude. I considered 45°, 60°, and 90° differences, but decided 60° was the best solution. I scoured the Internet for a circuit. Unfortunately, while multiple phases exist, and the topologies are legion, no topology offered sine waves of equal amplitude with a 60° phase shift. I thought the solution would look like a common three-op-amp phase-shift oscillator, so that was...
August 16, 2007[Ideas For Design] Simple Additions To Audio Amplifier Prevent Clipping At Higher Inputs
Amplifying the human voice presents some tough challenges. One of the toughest of these is providing enough amplification to make sure a soft-spoken person can be heard while allowing sufficient headroom for people who speak loudly. If the amplification is too high, a loud voice or noise causes clipping of the audio waveform, which makes the output signal unintelligible and harsh to the ears. One solution to this dilemma is to limit the signal with a nonlinear transfer...
September 29, 2005[Ideas For Design] High-IOUT LDO Rgulator Has Excellent Transient Response
Originally, the venerable three-terminal linear regulator featured a bipolar junction transistor emitter-follower output that exhibited very low output impedance. Many of today's applications demand dropout voltages lower than that of the first-generation regulators (1.5 V). Most modern regulators, therefore, include a common-source MOSFET as the pass element. One compromise that's associated with the common-source (or common emitter) output is an intrinsically high output...
