Elenco PK101 w/ Computer Interface Manual do Utilizador descarregar pdf (Página 18)

+9V

33kΩ

473

470Ω

502

Project PC5

OBJECTIVE: To demonstrate storage mode.

Electronic Noisemaker PC

Build the circuit shown, connecting the battery last since it will turn the circuit on. If continuing from the

previous experiment then close the Winscope program and run it again, to reset the settings. Click on

the On-Line button to activate, and press the switch several times. Set Winscope to the settings shown

below, and move the knob on the variable resistor around to change the waveform and the sound. A

sample waveform is shown here, but the pattern and shape of the pulses depends on the variable

resistor setting.

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SPEAKER

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Elenco PK101 w/ Computer Interface Manual do Utilizador Página 18