28176 Parallax Inc, 28176 Datasheet - Page 79

• Manufacturer Part Number: 28176
• Description: KIT PARTS PROCESS CONTROL W/TEXT
• Manufacturer: Parallax Inc

Specifications of 28176

• Accessory Type: Process Control
• Product: Microcontroller Accessories
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant
• For Use With/related Products: BASIC Stamp® 2 and Board of Education
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant, Contains lead / RoHS non-compliant

Another effect is loading on the output. Take, for example, a voltmeter with an input
impedance of 1 MΩ. If R
read? It should be 5 V since the transistor is in cutoff, but R
input form a voltage divider as shown in Figure 3-16. The actual measured voltage
would be 2.5 V. This is termed “loading”.
C
is 1 MΩ and the transistor is in cutoff, what voltage will be
C
Figure 3-16
Loading Effects
of the output and the meter
Figure 3-15
2N3904 Transistor
Characteristic Curve