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homehwrec [2010/10/02 16:31]
sestst
homehwrec [2018/11/03 02:59]
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-====== Receiver Circuits ====== 
-To use the microphone as an input, you need to adjust the incoming signal level to the sensitivity of the microphone and put a capacitor in series to block the DC component introduced by most microphone inputs. The capacitor C2 is usually not needed, it is intended to remove noice. 
  
-{{:​upm_scheme.png| Reception Circuit}} 
- 
-Here are some examples of receiver circuits: 
- 
-[[modupm|{{:​pci_card.png|}}]][[modupm|Using the UPM thermometer as RF receiver for the 433.92MHz band]] 
- 
-[[walterreceiver|{{:​pci_card.png|}}]][[walterreceiver|An RF receiver for the 433.92MHz band by Walter Kr√§mbring]] 

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