Lesson 46
Transistors, Part 2, The PNP Transistor
The PNP transistor; PNP bias arrangement; Collector current in a PNP transistor; Voltage and current in a PNP transistor; PNP transistor in a circuit; PNP transistor[...]
These lessons cover essential electrical and electronics lessons for automotive, truck and heavy equipment technicians in a way that minimizes excessive emphasis on electrical theory and focuses on the more practical aspects of troubleshooting vehicle electrical and electronic systems. This is a complete 60 lesson vehicle electrical-electronics training program with a review test after every 4th lesson. The lessons begin with essential electrical training and then through vehicle on-board computer circuit operation and circuit troubleshooting.
The PNP transistor; PNP bias arrangement; Collector current in a PNP transistor; Voltage and current in a PNP transistor; PNP transistor in a circuit; PNP transistor[...]
Lesson introduction; Zener diodes; Zener diode in a voltage regulation circuit; Why test a 5 volt reference circuit; How to test a 5 volt reference circuit; How a 5 [...]
Lesson introduction; The spike suppression diode; spike suppression diode review; spike suppression diodes and driver; Spike suppression in injector circuits; Lab Sc[...]
Polarity sensing diodes; The polarity sensing diode; Polarity sensing diode in injector circuits; Polarity sensing diode in relay circuits; Analyzing TTS readings wi[...]
Lesson introduction; Analog vs. digital electronics; Analog voltage; Measuring analog voltage; Using analog voltage to control a lamp; Digital voltage; Using a digit[...]
Lesson introduction; Numbering systems; What is a logic circuit?; Logic formats and logic levels; The logic gate function; Logic gate symbol and truth table; Actual [...]
Lesson introduction; The NAND gate function; NAND gate logic symbol and truth table; Actual circuit of a NAND gate; Quad driver NAND gate operation; Troubleshooting [...]
Lesson introduction; Introduction to integrated circuits; Basic computer block diagram; The CPU; ROM, RAM, PROM memory; Analog to digital conversion; Input'output IC[...]
Lesson introduction; Two resistor "fixed" voltage divider; Two resistor "dynamic" voltage divider; Three resistor "fixed" voltage divider; Current problems with volt[...]
Introduction; The potentiometer principle; Potentiometer failures; Throttle position sensors; Adding voltage to the TP sensor circuit; Significance of analog sensor [...]
Completing the TP sensor circuit; TP sensor noise filter circuit; Noise filter networks, The analog to digital converter; Labeling logic condition in logic diagrams;[...]
Switch position sensors; Input/output IC inside the PCM; Troubleshooting switch-to-ground sensing; Troubleshooting 3rd gear switch; Switch to voltage position sensin[...]
Lesson introduction; Engine coolant sensor circuit; Basic ECT circuit; ECT circuit for OBD-II, ECT strategy; DTC sensor graph; Sample ECT sensor graph; ECT sensor DT[...]
Lesson introduction; Manifold absolute pressure sensor; MAP technology yesterday and tomorrow; MAP operating strategy; Basic MAP sensor circuit; MAP sensor DTC graph[...]
Welcome to Lesson 60; Switch to ground computer control basics; Switch to ground controlled solenoid circuit; When switch to ground reading is not normal; Resistance[...]