Lesson 31
Capacitors & Inductors Working Together
Capacitors and inductors work together; Reviewing capacitors; Reviewing inductors; Radio noise filtering; Radio noise filter theory; Coil filters current variations;[...]
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.
Capacitors and inductors work together; Reviewing capacitors; Reviewing inductors; Radio noise filtering; Radio noise filter theory; Coil filters current variations;[...]
Where we are up to now; When a coil is a load in a circuit; Coil (Load) reaction to circuit current; Coil load resistance readings; Reviewing ohmmeters; Measuring co[...]
Overview; Measuring coil circuit Vds; Controlling a coil as the load; Switch-to-ground control; TTS readings with S-G-C; Try the TTS on an A/C Clutch on a car; Six b[...]
Overview; DC motor component parts; Current in DC motor operation; DC motor operational characteristics; What is CEMF?; DC motor symbols; DC motor configurations; St[...]
When a DC motor is the load in a circuit; DC motor reaction to circuit current; DC motor winding resistance; Check DC motor for shorts to housing; Measuring DC motor[...]
Overview; Controlling a DC motor; Switch-to-voltage DC motor Control; TTS readings with S-V-C; TTS readings with S-G-C; Perform TTS on a DC blower motor circuit; DC [...]
DC motor circuit failure #5; DC motor circuit failure #6; DC motor is shorted; Voltage side of circuit shorted to ground; DC motor winding shorted to housing; DC mot[...]
Lesson introduction; The purpose of relays; Common relay terminal description; A coil polarity problem; Relay spike suppression resistor; Introduction to troubleshoo[...]
Lesson introduction; Relay DC circuit operation; Relay terminology; CCA or relay's primary circuit; CCA of relay's secondary circuit; A system for troubleshooting re[...]
Checking diodes with diode test; Will diode test always check a diode?; Relays with spike suppression resistors; measuring relay coil current; measuring relay circui[...]
Finishing up relay circuits; Switch-to voltage relay control; Switch-to-ground relay control; Relay circuit failures; Relay circuit failure #1; Relay circuit failure[...]
It's about time we got this far; Electric current in circuits; What does a VET need to know; The history of solid state electronics; It's time for atoms . . . again;[...]
Lesson introduction; Electrons and Holes; Creating a PN junction diode; Semiconductor diode terminology; Forward bias turns diode ON; Diode schematic symbol forward [...]
Lesson introduction; Testing diodes; Setting Up analog ohmmeter; Testing diodes with analog ohmmeter; Applying reverse bias turns diode OFF; Applying forward bias tu[...]
Lesson introduction; basic transistors; The NPN transistor; Forward bias current in a NPN transistor; Collector current in a NPN transistor; Voltage and current in a[...]