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Electronic Parts

Electronic Parts. ABE425 Engineering Measurement Systems. Experiment board for 40-pin DIP PICs. DB25 pin connector. PIC Microcontroller. 40 pin Dual in Line Package (DIP). Pin 40. Pin 21. Notch. Pin 1. Pin 20. Resistors. Values Color coding Power (Watt) Power = U*I.

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Electronic Parts

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  1. Electronic Parts ABE425 Engineering Measurement Systems

  2. Experiment board for 40-pin DIP PICs DB25 pin connector

  3. PIC Microcontroller • 40 pin Dual in Line Package (DIP) Pin 40 Pin 21 Notch Pin 1 Pin 20

  4. Resistors • Values • Color coding • Power (Watt) • Power = U*I • Purpose: Control current and voltages

  5. Variable resistor • Aka Potentiometer • Aka trim pot • Bottom pin is the wiper (runner) • Value is 102 • This means 1 0 with 2 zeros • This one is 1000 (Ohm) • Avoid making short cuts !!

  6. Capacitors • Small caps count from pico-Fahrad • This one is 10 pF • Remember • Pico =10^-12 • Nano =10^-9 • Micro =10^-6 • Milli =10^-3

  7. Electrolytic capacitors • These have a polarity!! • Short wire is always GND! • This one is a radial version Filter, for instance to remove noise. Block DC components in signals

  8. Axial Electrolytic capacitor • Mind the polarity, wires can not be compared

  9. Voltage regulators • 7805 Regulator ($1,50) • These can get hot! Put a heat sink if neccesary • Max output current about 1.5A Heat sink IN GND 5V OUT Purpose: Keep constant output voltage while input voltage varies (even oscillates)

  10. 741 OpAmp Purpose: Amplify signals, act as a buffer

  11. DC-DC converters • Expensive ($50)

  12. Light emitting diodes • This is a diode, which happens to light up • Flat spot indicates GND • Short wire indicates GND • Avoid making short cuts, always put a resistor in series (470  (Ohm)) • LED needs about 10 mA to light up

  13. Diodes • Conduct current in only one direction (forward bias) • Block current in other direction (reverse bias) • Stripe indicates the Cathode (“cold side)

  14. Single row header • For making connections

  15. Crystals • Crystal 12 MHz • Need capacitors to work • Oscillator version 40MHz • just apply Vcc, no caps needed Purpose: Generate very precise clocks for telecommunication, microcontrollers etc.

  16. CMOS chip (4050) • Specs: CMOS Logic Data book Purpose: Amplify signals, act as a buffer

  17. Homework • Find the datasheets of the following chips • Give the pins for the Vcc (power) and GND • 741 OpAmp • 14050B CMOS Buffer • 7400 NAND • 7404 HEX Inverter • 7413 4 input NAND • 7432 AND

  18. Jumpers BJT transistors Crystal Resistors 7805 7-seg displays Elcaps LCD Sockets Resistor Network DIP switch 3mm LED Trim pot Processor Capacitor

  19. The End

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