Speech Pitch Controller using MSM6322GSK
That circuit uses the MSM6322GSK which is only available in small 24 pin plastic SOP style package. A speech pitch converter IC that operates in real time and requires very few external components. It has a microphone preamplifier and line level input and the output requires only a single transistor to directly drive a loudspeaker. As well as the microphone preamplifier, the IC contains a 4th order low pass filter on input and a 3rd order low pass filter on output. In addition there is a build-in 8-bit A/D converter and 9-bit D/A converter. [...]
Categories: Audio diagram, Electronic Control Tags: Electronic Control, Volume Control
Sensing Light with a Programmable Gain Amplifier
Photo sensors bridge the gap between light and electronics. Microchip’s Programmable Gain Amplifiers (PGAs) are not well suited for precision applications (such as CT scanners), but they can be effectively used in position photo sensing applications minus the headaches of amplifier stability. When the two, six or eightchannel PGA is used in this system, the other channels can be used for other sensors or an array of photo sensors without an increase in signal conditioning hardware or PICmicro® microcontroller I/O pin consumption.
Read more original source: http://www.microchip.com/stellent/
Categories: Detector Tags: Electronic Control, light control, Power Amplifier
Intermittent wiper controller
The intermittent wiper circuit shown above causes the auto’s windshield wipers to wipe
once every several seconds instead of constantly wiping. The circuit may be added to
older cars to provide the intermittent function or it may be used to replace broken wiper
circuits in modern cars.
Read more original source:
http://www.techlib.com/files/wiperkik.pdf
Categories: Automotive, Electronic Control Tags: Automotive, Electronic Control
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