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delabs Technologies
Product Design - Industrial Automation and Instrumentation
Product Design - Industrial Automation and Instrumentation
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LM2575 - Buck Adjustable Switching Regulator

"The buck-boost regulator circuit delivers -5V output. I hoped this would a nice way to generate a negative voltage for e.g. an LCD-display. However this circuit requires component values that are similar to the buck regulator at high load."

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7800 and 7900 Series Voltage Regulators

The LM78XX series of three-terminal positive regulators is available in the TO-220 package and with several fixed output voltages, making them useful in a wide range of applications.

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Automobile Ideas from 2002

Cars should be aware of their environment and display status in the dashboard. It is like having cameras all around. The objects around and their direction of movement and acceleration.

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Soundcard Oscilloscope by Christian Zeitnitz

The Soundcard Oscilloscope receives its data from the Soundcard with 44.1kHz and 16 Bit resolution. The data source can be selected in the Windows mixer (Microphone, Line-In or Wave).

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TL494 - SMPS PWM Classic Controller

The TL494 incorporates all the functions required in the construction of a pulse-width-modulation (PWM) control circuit on a single chip.

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AD8436 - Low Cost RMS to DC Convertor

This chip from Analog Devices computes a precise dc equivalent of the rms value ac waveforms, including complex patterns such as those generated by switchmode power supplies and triacs.

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Printer Port Logic Analyzer

This is a Test Circuit for Logic Analyzer software, with the Simple port circuit. The VB Logic Analyzer works, but is just an example program to test and learn.

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Analog Blind Dial On Delay Timer

It is called analog dial timer as it has no digital display, but the chip is digital it is CD4541. It is Mains operated, you could make on-delay or off-delay. By changing the caps and resistors or with even dip-switches you could get timing of few seconds to many hours. Circuit is Analog Timer 4541 .

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MC7800 MC7900 1 Amp Voltage Regulators regulators

hese voltage regulators are monolithic integrated circuits designed as fixed−voltage regulators for a wide variety of applications including local, on−card regulation. These regulators employ internal current limiting, thermal shutdown, and safe−area compensation. 78 and 79 series voltage regulators are the most common in power supplies and easy to use.

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Function Generator using the CA3140

Here is a complete project which will help in learning to apply the CA3140 in a small instrument that could be used in your test bench along with the oscilloscope. It is necessary to study the datasheet for understanding the device and this application with full details.
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