DrDAQ

Data logger, oscilloscope, signal generator and more!

DrDAQ is a versatile instrument that connects to the USB port of any PC. Using the supplied PicoScope software it can be used as an oscilloscope, spectrum analyzer and signal generator.

From just £89.00

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Flickering lights

Results and answers

A filament lamp produced the following trace, with a frequency of 100 Hz.

Filament Lamp frequency

A computer monitor gave the following frequency using the meter function:

computer monitor frequency

The graphs below show how V (blue), I (purple) and P (yellow) vary with time.

Voltage, Current, Power

The key point is that the power is always a positive quantity, and varies sinusoidally with a frequency = 2 x frequency of the mains voltage.

Teachers’ notes

Care should be taken not to place the DrDAQ too close to a CRT TV screen as there is a possibility of damage due to a shock caused by the build-up of electrostatic charge on the screen.

The light-dependent resistor used as the sensor in this experiment does not respond rapidly to changes in light level, but it does produce a small change in resistance that can be used to record the change in light intensity.

Credits, comments and further info

Submitted By:

Peter Webber 
Exmouth Community College.
Devon UK

Any comments / suggestions for improvements, please e-mail him at:

peter.webber@exmouthcollege.devon.sch.uk

Testimonials

  • I have been using my 4224 PicoScope for years. I travel abroad so this has been ideal due to its physical size. Storage of waveforms on my Laptop is very easy allowing me to quickly email waveforms to my Colleagues.

    Andrew
  • Not many USB scopes works on Win & Mac & Linux too, so that proves me that guys from Pico really cares about us, customers. This made my decision much easier when I was looking to buy an USB scope.

    Raul Trifan
  • We have been using Picoscope 6404D for quite some time, and are amazed by its accuracy and powerful emulations while working with numerous signal evaluations.

    J Mohanty
  • PicoLog TC-08: This is a very nice unit that works consistently and reliably.

    Jeff Hulett
  • It is a great scope. I had a weird problem - it did not work on one of my PC’s. Customer service gave me first class service. If I could give 6 stars for customer service - I would do so.

    Niels Larsen
  • Perfect Partner for Development of Encoder controlled Stepper Motor Actuators. Since the included software is really stable, this type of device is a great tool for great tasks!

    Helmut Schoettner
  • A superb piece of equipment worth its weight in gold

    Nigel Clinch
  • So simple to use & beats any other I have ever used hands down.

    John D Samsing
  • Great functionality in a compact size. I really like moving the mouse pointer to a position and having the Time and Voltage display the values at that point. Calibration equipment is a breeze with that feature.

    Don Horein

PC oscilloscope and data logger products

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