122-28176 Parallax Inc, 122-28176 Datasheet - Page 87
122-28176
Manufacturer Part Number
122-28176
Description
GUIDE STUDENT PROCESS CONTROL
Manufacturer
Parallax Inc
Specifications of 122-28176
Accessory Type
Manual
Product
Microcontroller Accessories
Lead Free Status / RoHS Status
Contains lead / RoHS non-compliant
For Use With/related Products
Propeller Education (PE) Kit
Lead Free Status / RoHS Status
Lead free / RoHS Compliant, Contains lead / RoHS non-compliant
- Current page: 87 of 330
- Download datasheet (11Mb)
Figure 3-23 (top): Higher-voltage digital signals can be interfaced using a 74HC4050
buffer or 74HC4049 inverter powered at +5 volts. These devices can safely handle inputs
up to 15 volts. Again, the grounds must be common.
Figure 3-23 (bottom): An opto-coupler may be used to interface different voltage levels
to the BASIC Stamp. The LED’s resistor holds current to a safe level while allowing
enough light to saturate the phototransistor. The input circuit can be totally isolated from
the phototransistor’s BASIC Stamp power supply because they do not need to share a
common-ground. This isolation provides effective protection of each circuit in case of an
electrical failure of the other.
The optical reflective switch will be explored further in Chapter 4.
Figure 3-23
Digital Interface
Circuits
Top: High
Voltage Logic to
BASIC Stamp
Bottom:
Optocoupler to
BASIC Stamp
Related parts for 122-28176
Image
Part Number
Description
Manufacturer
Datasheet
Request
R
Part Number:
Description:
MANUAL FOR SUMOBOT
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
GUIDE STUDENT SMART SENSORS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
MANUAL PROPELLER
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
LEAD WIRES FLYING CABLE III/IV
Manufacturer:
Xilinx Inc
Datasheet:
Part Number:
Description:
BOARD ADAPTER AND FLY LEADS
Manufacturer:
Xilinx Inc
Datasheet:
Part Number:
Description:
PLATFORM CABLE USB II
Manufacturer:
Xilinx Inc
Datasheet:
Part Number:
Description:
KIT STARTER COOLRUNNER-II BUNDLE
Manufacturer:
Xilinx Inc
Datasheet:
Part Number:
Description:
Microcontroller Modules & Accessories DISCONTINUED BY PARALLAX
Manufacturer:
Parallax Inc
Part Number:
Description:
Microcontroller Modules & Accessories DISCONTINUED BY PARALLAX
Manufacturer:
Parallax Inc
Part Number:
Description:
BOOK UNDERSTANDING SIGNALS
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
BOARD EXPERIMENT+LCD NX-1000
Manufacturer:
Parallax Inc
Datasheet:
Part Number:
Description:
IC MCU 2K FLASH 50MHZ SO-18
Manufacturer:
Parallax Inc
Datasheet: