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university:courses:electronics:comms-lab-hartley-osc [28 Aug 2014 15:43] – [Questions:] Doug Mercer | university:courses:electronics:comms-lab-hartley-osc [25 Jun 2020 22:07] (current) – external edit 127.0.0.1 | ||
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=====Materials: | =====Materials: | ||
- | + | ADALM2000 Active Learning Module\\ | |
- | Analog Discovery Lab hardware\\ | + | |
Solder-less breadboard, and jumper wire kit\\ | Solder-less breadboard, and jumper wire kit\\ | ||
1 - 2N3904 NPN transistor\\ | 1 - 2N3904 NPN transistor\\ | ||
1 - 1 uH inductor\\ | 1 - 1 uH inductor\\ | ||
1 - 10 uH inductor\\ | 1 - 10 uH inductor\\ | ||
- | 1 - 100 uH inductor\ | + | 1 - 100 uH inductor\\ |
1 - 1 nF capacitor ( C< | 1 - 1 nF capacitor ( C< | ||
2 - 0.1 uF capacitors ( marked 104 )\\ | 2 - 0.1 uF capacitors ( marked 104 )\\ | ||
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=====Hardware Setup:===== | =====Hardware Setup:===== | ||
- | The green squares indicate where to connect the Discovery | + | The green squares indicate where to connect the ADALM2000 |
+ | |||
+ | <WRAP centeralign> | ||
+ | |||
+ | <WRAP centeralign> | ||
=====Procedure: | =====Procedure: | ||
Having finished construction the Hartley oscillator check that the circuit is oscillating correctly by turning on both the + and - 5 V power supplies and connecting one of the oscilloscope channels to the output terminal. It may be found that the value of R< | Having finished construction the Hartley oscillator check that the circuit is oscillating correctly by turning on both the + and - 5 V power supplies and connecting one of the oscilloscope channels to the output terminal. It may be found that the value of R< | ||
+ | |||
+ | A plot example using R< | ||
+ | |||
+ | <WRAP centeralign> | ||
+ | |||
+ | <WRAP centeralign> | ||
=====Questions: | =====Questions: | ||
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|4.7nF| | |4.7nF| | ||
|10nF| | |10nF| | ||
+ | |||
+ | <WRAP round download> | ||
+ | **Lab Resources: | ||
+ | * Fritzing files: [[downgit> | ||
+ | * LTspice files: [[downgit> | ||
+ | </ | ||
**For Further Reading:** | **For Further Reading:** |