308

Transistors

 2004
Item Description Room Location
1  Oscilloscope 108 H3-6
2  Digital camera - -
3  Semiconductor curve tracer 108 H3-1
4  DC power supply 108 H4-4
5  Function generagor 108 H3-4
6  Digital multimeters (2) 108 H3-3
7  LCR meter 108 H3-3
8  Resistance box 108C F2
9  Circuit board and springs 108 C5
10  NPN silicon transistor, 2N4115, Fairchild 108 parts cabinet 2
11  Resistors (3)

 R1 = 33 K (orange, orange, orange)
 R2 = 10 K (brown, black, orange)
 RE = 4.7 K (yellow, violet, red)

 108 parts cabinet 1
12  Capacitors (3)

 C1 = C2 = CE = 20 µF

 108 C2
13  Wires 108 C3

 

  Notes:
1. Use the same type of multimeter (yellow or black) for measurements of both input and output AC voltages.
2. Monitor the AC output voltage of the amplifier with an oscilloscope. If the sine wave begins to square off, reduce the input signal voltage below the 20 mV recommended until the wave becomes a good sine wave.  The multimeters will not read properly if the wave is squared off.  Some type of voltage divider arrangement may be needed on the oscillator output to get the AC input signal voltage small enough.
3. Plot the data after this part is finished to see that everything came out ok.