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university:courses:electronics:electronics-lab-envelope-detector [20 Mar 2018 17:22] – Biased Envelope Detector: Add HW Setup + Procedure Antoniu Miclaus | university:courses:electronics:electronics-lab-envelope-detector [25 Jun 2020 22:07] – external edit | ||
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Consider the circuit presented in Figure 1. | Consider the circuit presented in Figure 1. | ||
- | <WRAP centeralign> | + | <WRAP centeralign> |
<WRAP centeralign> | <WRAP centeralign> | ||
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Consider the circuit presented in Figure 9. | Consider the circuit presented in Figure 9. | ||
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<WRAP centeralign> | <WRAP centeralign> | ||
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==== Materials ==== | ==== Materials ==== | ||
- | ADALM1000 Active Learning Module | + | ADALM1000 Active Learning Module\\ |
- | Solder-less breadboard, and jumper wire kit | + | Solder-less breadboard, and jumper wire kit\\ |
- | 1 - 1.5 KΩ resistor (brown green red) | + | 1 - 1.5 KΩ resistor (brown green red)\\ |
- | 1 - 10 KΩ resistor (brown black orange) | + | 1 - 10 KΩ resistor (brown black orange)\\ |
- | 1 - 20 KΩ resistor (red black orange) | + | 1 - 20 KΩ resistor (red black orange)\\ |
- | 2 - 1.0uF capacitor, C1, C2 | + | 2 - 1.0uF capacitor, C1, C2\\ |
- | 1 - 2N3904 NPN transistor | + | 1 - 2N3904 NPN transistor\\ |
- | 1 - 1N914 diode | + | 1 - 1N914 diode\\ |
==== Background ==== | ==== Background ==== | ||
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Consider the circuit shown in Figure 14. | Consider the circuit shown in Figure 14. | ||
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<WRAP centeralign> | <WRAP centeralign> | ||
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==== Procedure ==== | ==== Procedure ==== | ||
+ | |||
+ | Connect the circuit to 5V supply. | ||
To test this circuit first use the same modulated signal you used in the simple diode envelope detector example. Compare the new design to the simple diode envelope detector. Using the same steps as earlier generate AM signals with smaller amplitudes / higher modulation indexes and compare the outputs of these two detector designs. | To test this circuit first use the same modulated signal you used in the simple diode envelope detector example. Compare the new design to the simple diode envelope detector. Using the same steps as earlier generate AM signals with smaller amplitudes / higher modulation indexes and compare the outputs of these two detector designs. | ||
- | A plot example of the input and output waveforms is presented in Figure 16. | + | A plot example of the input and output waveforms |
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===== Further Reading ===== | ===== Further Reading ===== | ||
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+ | <WRAP round download> | ||
+ | **Lab Resources: | ||
+ | * Fritzing files: [[downgit> | ||
+ | * LTspice files: [[downgit> | ||
+ | </ | ||
Additional resources: | Additional resources: | ||
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* [[http:// | * [[http:// | ||
]] | ]] | ||
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**Return to Lab Activity [[university: | **Return to Lab Activity [[university: | ||