Lab5Pics

Lab5Pics - U4A LF347N C10 0.1F R21 1k R22 100k D1 1N4148 D2...

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© Bob York Full Receiver Schematics VDD VSS Bypass capacitors  should be close to IC R12 C5 0.1µF C6 0.1µF R14 R13 1kΩ R16 C8 R15 1kΩ C7 10pF R17 1kΩ R18 1kΩ VSS R19 1kΩ R20 R26 10kΩ R24 10kΩ C13 2.2nF C14 2.2nF C15 0.1µF VSS C16 0.1µF VDD C9 U3A LF347N U3B LF347N U3C LF347N U3D LF347N U4A LF347N C10 0.1µF R21 1kΩ R22 100kΩ D1 1N4148 D2 1N4148 VDD U4B LF347N U4C LF347N C11 0.1µF R25 47kΩ R27 10kΩ R29 10kΩ R28 10kΩ C12 1nF R23 2kΩ Key=A 25% IR 40k Hz PWM Rec eiver Threshold detector/limiter  (signal conditioning) DC Block 3rd-order Low-pass (demodulation) IRD1 BPV23F C A IR Detector  and gain stage 2nd-order High-pass  (interference-rejection) and gain R23 sets  crossing threshold
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© Bob York Individual Parts VDD VSS R12 C5 0.1µF C6 0.1µF R14 R13 1kΩ C7 10pF VSS U3A LF347N U3B LF347N IRD1 BPV23F C A IR Detector  and gain stage R16 C8 R15 1kΩ R17 1kΩ R18 1kΩ R19 1kΩ R20 C9 U3C LF347N U3D LF347N 2nd-order High-pass  (interference-rejection) and gain
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Unformatted text preview: U4A LF347N C10 0.1F R21 1k R22 100k D1 1N4148 D2 1N4148 VDD R23 2k Key=A 25% Threshold detector/limiter (signal conditioning) R23 sets crossing threshold R26 10k R24 10k C13 2.2nF C14 2.2nF C15 0.1F VSS C16 0.1F VDD U4B LF347N U4C LF347N C11 0.1F R25 47k R27 10k R29 10k R28 10k C12 1nF DC Block 3rd-order Low-pass (demodulation) Bob York Block Diagram IR Tx DC Supply Modulation Source IR Rx DC Supply Audio Amplifier R Record distance in 2009 class: 150 ft! Bob York IR Emitter characteristics R R Emitter Detector Boresight, 0 Bob York Receiver R R Emitter Detector Boresight, 0 Bob York Improved Signal Conditioning Bob York AGC Loop...
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Lab5Pics - U4A LF347N C10 0.1F R21 1k R22 100k D1 1N4148 D2...

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