Final Flashcards
Series
Resistors - RT + R/1 + R/2 + R/3….
Capacitors - 1/CT = 1/C1 + 1/C2 + 1/C3
Parallel
Resistors - 1/RT = 1/R1 + 1/R2 + 1/R3
Capacitors - CT = C1 +C2 + C3 …..
What moves electrons?
Voltage - Volts (E)
Electrical Pressure
EMF (Electromotive Force)
Potential Difference
Resistance (R)
Conductors (Free electrons; so they move easily.)
Insulators
AC
Alternating Current
DC
Direct Current
Meters
Volts
Ohms
Current
Types of Circuits
- Open (No path)
- Short - (No load)
- Complete
A. Load
B. Power Source
C. Path (from and to)
Rules for OHMS before taking readings?
- Power off
2. Isolated
Circuit Laws
E = I X R P = I X E
Series Laws
ET = E1 + E2... IT = I1 = I2... RT = R1 + R2...
Parallel Laws
ET = E1 = E2... IT = I1 + I2... 1/RT = 1/R1 + 1/R2...
Coils
Relay - Operate switches
Solenoids - Operate mechanical (valve)
Transformers - Energizes another coil
5 to 1 Ratio
50 Volts primary
10 Volts secondary
100 Turns
100 to 1
120 Volts = 12000 turns
Motors
Motion
Magnet strength depends on:
- Number of turns
- Current flow
- Type of material
Wiring
Switches - Series
Loads - Parallel
Never jumper?
!!!!!!!!LOADS!!!!!!!!