A Belmont Report

1. POWER A BOARD

⟵ AN INTRODUCTION

1. POWER A BOARD

The instructions that follow assume you build your circuit in a vertical orientation. That means centering work around a breadboard “trench” (Figure 3). To follow along, locate one trench on the breadboard. From here on, everything to the right side of that trench is on the “right” and everything to the left side is on the “left”.  Feel free to consult the Reference sheet or to ask any of the volunteers any questions you may have.

Step 1. Connect a power supply to a breadboard

  1. ¡Turn on! the power supply
    1. To adjust a particular output port voltage, push in the “METER” button to select that port voltage, and adjust the voltage via the “VOLTAGE ADJUST” knobs
    2. Set the +20 V port voltage to be approximately +5 V
    3. Set the –20 V port voltage to be approximately –5 V
  2. Attach a 1m red cable from the +20 V port of the power supply to the red breadboard post
  3. Attach a 1m black cable from the –20 V port of the power supply to the black breadboard post
  4. Attach another 1m black cable from the COM port of the power supply to the green breadboard post, this will serve as a reference point, where voltage is 0

Step 2. Wire the breadboard posts to its power rails

  1. Wire the red breadboard post to the red (+) column of the right rail
  2. Wire the black breadboard post to the blue (–) column of the left rail
  3. Wire the green breadboard post to the blue (–) column of the right rail

Check in 

  • Where on the board is it +5 V?
  • Where is it –5 V?
  • What voltage is it at the reference point?

Before you continue: ¡Turn off! the power supply (for now)!

2. BUILD AN AMPLIFIER ⟶