Oscilloscope adaptor: Difference between revisions
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* Use a 2.2v zener diode with a voltage dependent switch to enable the measuring of voltages less than 2.4v(.3*8) |
* Use a 2.2v zener diode with a voltage dependent switch to enable the measuring of voltages less than 2.4v(.3*8) |
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** This method would require the child to recognize high(above 1.9v) and low(below 1.9v) voltages, and to adjust a switch accordingly. |
** This method would require the child to recognize high(above 1.9v) and low(below 1.9v) voltages, and to adjust a switch accordingly. |
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[[User:DyD|DyD]] 13:40, 20 September 2007 (EDT) |
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[[Category:Hardware ideas]] |
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[[Category:Hardware]] |
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Revision as of 18:26, 20 September 2007
Goal: To take input from .3-16v to .3-2.0v
Ideas:
Voltage Divider w/ Zener
- Use a resistor-based voltage divider that divides by eight, reducing 16 volts to 2 volts.
- Using precision surface-mount resistors on a PCB with a heat-sink
- Use body of probe as heatsink, if conductive enough.
- Using precision surface-mount resistors on a PCB with a heat-sink
- Use a 2.2v zener diode with a voltage dependent switch to enable the measuring of voltages less than 2.4v(.3*8)
- This method would require the child to recognize high(above 1.9v) and low(below 1.9v) voltages, and to adjust a switch accordingly.