How to Use Transistors As Clipping Diodes
- 1). Connect one of the leads from the 10 kiloohm resistor to the transistor Base lead, then solder the connection. Connect one of the leads from the 1 kiloohm resistor to the transistor Emitter lead, then solder the connection.
- 2). Connect the first alligator probe lead wire from the free lead on the 10 kiloohm resistor to one of the AC power supply terminals. Connect the second alligator probe lead wire from the free AC power supply terminal to electrical ground. Connect the third alligator probe lead wire from the free lead on the 1 kiloohm resistor to electrical ground.
- 3). Turn on the oscilloscope and set the "Volts/Div" setting to "5." Place the oscilloscope probe on the front calibration grounding ring, and adjust the "Y-Pos" setting so that the lighted line is halfway between the top and bottom of the screen, aligned as closely to the center line as possible. Disconnect the probe from the calibration ring, and connect the probe to the transistor Emitter lead.
- 4). Turn on the AC power supply. Observe the oscilloscope screen; the bottom of the output waveform flattens out so that there are no negative voltage (below 0 volts) readings.