Building the AD Converter

Schematics and wiring diagrams are provided for the majority of the circuits. You will ' be using the A/D converter circuits with others from each chapter. Please follow the parts placement EXACTLY!

V Disconnect power to your BASIC Stamp module; always do this before building or modifying circuits.

V Install the 14-pin ADC0834 DIP (Dual Inline Package) chip as show in Figure 1-7. Note that the DIP is oriented with the notch pointing down. This is done intentionally for reasons that will become clear shortly.

V Build the remainder of the circuit with the jumper wires.

On a DIP chip, the pins are numbered counterclockwise from the reference notch.

ADC0834

ADC0834

Figure 1-6

Converter Schematic

Figure 1-6

Converter Schematic

Figure 1-7

A/D Converter Wiring Diagram

Double-check your wiring! Make sure that P3 is connected to pin 10 and not pin 11 of the ADC0834 chip! An accidental connection to ADC0834 pin 11 would cause false readings for output voltages in future experiments.

Choosing Correct Wire Colors

The Stamps in Class - Experiments with Renewable Energy kit comes with an assortment of colored wires, which you will use to hook up the various components for each experiment. The wire colors have a certain value in and of themselves that should not be ignored. Just as the colored bands on a resistor indicate the resistance and tolerance of the resistor, the wire colors can also communicate a particular function of the circuit that you create. For example, if you are able to use the following wire colors consistently for the functions listed below, you will be able to see at a glance where voltages, signals and grounds are located. This could avoid confusion and would make your experiments more interesting and rewarding:

Black -Vss

Blue - Port connections or connections between components Yellow - Port connections or connections between components

These are not intended to be hard and fast rules for you to follow, but are presented as a suggestion for consistent wiring techniques. If you choose to follow the color code above, your circuits will be more attractive to the eye and will be much easier to understand in terms of what is connected to what.

DIY Battery Repair

DIY Battery Repair

You can now recondition your old batteries at home and bring them back to 100 percent of their working condition. This guide will enable you to revive All NiCd batteries regardless of brand and battery volt. It will give you the required information on how to re-energize and revive your NiCd batteries through the RVD process, charging method and charging guidelines.

Get My Free Ebook


Post a comment