meta data for this page
  •  

Differences

This shows you the differences between two versions of the page.

Link to this comparison view

Both sides previous revisionPrevious revision
Next revision		Previous revision
eigenbau:presacler:start [2018/04/11 13:00] – [Status] meinerseigenbau:presacler:start [2018/04/11 13:47] (current) – [Status] meiners
Line 47: Line 47:
 /* reine Idee / Prototyp / fertig zur Massenproduktion ... */ /* reine Idee / Prototyp / fertig zur Massenproduktion ... */
 prototype in testing phase\\ prototype in testing phase\\
-general concept works, some minor modifications needed (see 'Meckerliste')+  * general concept works, some minor modifications needed (see 'Meckerliste') 
 +  * the changes are implemented in the layout (v2), in principle ready for ordering
  
 would be interesting to see if theres added phasenoise. would be interesting to see if theres added phasenoise.
Line 74: Line 75:
 ==== Schaltplan ==== ==== Schaltplan ====
   * {{ :eigenbau:presacler:prescaler.pdf |schematic}} in PDF-format   * {{ :eigenbau:presacler:prescaler.pdf |schematic}} in PDF-format
-  * the source is created via KiCad and can be found on the git server: [[https://git.iqo.uni-hannover.de/vlbai/prescaler.git]]+  * the schematic and the pcb layout are created via KiCad and can be found on the git server: [[https://git.iqo.uni-hannover.de/vlbai/prescaler.git]]
  
 ==== Layout ==== ==== Layout ====
   * Size: 43 x 22 mm /* Höhe mal Breite in mm */   * Size: 43 x 22 mm /* Höhe mal Breite in mm */
   * Supply: +5V   * Supply: +5V
-  * Logic; 3x 3.3 V or 5V optional +  * Logic; 3x 3.3 V or 5V (optional) 
-  * Eingang: SMA, up to 1.1 GHz+  * Eingang: SMA, up to 1.1 GHz (nominal)
   * Ausgang: SMA $ f_{out} = f_{in} / div $ (1.1 GHz / 10 = 110 MHz max)   * Ausgang: SMA $ f_{out} = f_{in} / div $ (1.1 GHz / 10 = 110 MHz max)
-  * Der Bestückungsdruck: {{:eigenbau:presacler:start:start_layout.pdf}}+  * Der Bestückungsdruck: {{ :eigenbau:presacler:prescaler-bestueckung.pdf |}}
   * Die Bestückungsliste: {{:eigenbau:presacler:start:start__bom.pdf}}, {{:eigenbau:presacler:start:start_bom.xls}}   * Die Bestückungsliste: {{:eigenbau:presacler:start:start__bom.pdf}}, {{:eigenbau:presacler:start:start_bom.xls}}
   * {{ :eigenbau:presacler:prescaler_gerber.zip |zipped gerber files}} for PCB ordering   * {{ :eigenbau:presacler:prescaler_gerber.zip |zipped gerber files}} for PCB ordering
-  * Die Source des Layouts im pcb-Format liegt auf der [[:eigenbau:presacler:src:sourcen#start|Download-Seite des Wiki]]. FIXME  
  
 /* Das Layout als gerenderter Export vom EDA-Programm  /* Das Layout als gerenderter Export vom EDA-Programm 
Line 129: Line 129:
  
 ^           was ^ wieviel ^  E-Preis ^    Preis ^ Anmerkung  |  ^           was ^ wieviel ^  E-Preis ^    Preis ^ Anmerkung  | 
-|     Leiterplatte |   1x |  ??.?? € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | 1/n von XXX EUR  |+|     Leiterplatte |   1x |  27.74 € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | 1/5 von 138.69EUR  |
 |          Gehäuse |   1x |  ??.?? € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € |  | |          Gehäuse |   1x |  ??.?? € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € |  |
-|                * |   ?x |  ??.?? € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | ...  | +|          MC12080 |   1x |  04.12 € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | Mouser| 
-|              R,C |  ??x |   0.02 € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | Bauform 0805  |+|      SN74LVC3G17 |   1x |  00.50 € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | ca. Mouser| 
 +|       connectors |   1x |  ??.?? € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | ... | 
 +|              R,C |  20x |   0.02 € |  ~~=round(cell(1,row())*cell(2,row());2)~~ € | Bauform 0805  |
 |       Bestückung |                    ??.00 € ||| bei SRM  | |       Bestückung |                    ??.00 € ||| bei SRM  |
 |   [[:eigenbau:Verschnitt]] |           ?.?? € |||  | |   [[:eigenbau:Verschnitt]] |           ?.?? € |||  |
Line 142: Line 144:
   * :OK: there seems to be a DC offset on the output. maybe a highpass on the output would be nice to get rid of it. For now I solved this issue by cutting the line between the load resistor (changed to 470 Ohm) and the removed load capacitor and soldered a 10 nF capacitor there.    * :OK: there seems to be a DC offset on the output. maybe a highpass on the output would be nice to get rid of it. For now I solved this issue by cutting the line between the load resistor (changed to 470 Ohm) and the removed load capacitor and soldered a 10 nF capacitor there. 
   * :OK: the level of the logic input is not well defined, when disconnected. maybe add a pulldown.   * :OK: the level of the logic input is not well defined, when disconnected. maybe add a pulldown.
 +