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  #1851  
Old 12-09-2017, 09:57 AM
HaFar2010 HaFar2010 is offline
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Hello
Dear All.
I built CD4046+Pwer+display, but unfortunately its battery consumption is very high and don't work correctly with 2 or 4 9V. Do you have any suggestion for solving this problem?
What type of battery or power do you propose?
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  #1852  
Old 12-09-2017, 11:47 AM
HaFar2010 HaFar2010 is offline
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Please see the my panel of Franco's LRL.
There are three LEDs in CD4044 (one LED) + Pwer/display (two LEDs) (attached). Can you tell me what is function of blue LED (in CD4044 circuit )?
In my LRL, beep only is heard by rotating Gain screw, not by Threshold. If possible, please guide me how to caliber the LRL in real environment.

Thanks alot.
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  #1853  
Old 12-12-2017, 05:59 PM
HaFar2010 HaFar2010 is offline
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Hello
Dear All.
Please share list of components for CD4044.
Thanks.
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  #1854  
Old 12-14-2017, 06:07 AM
zixelll zixelll is offline
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Hello Franco The predecessor should be vertical or horizontal
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  #1855  
Old 12-15-2017, 11:31 AM
FrancoItaly FrancoItaly is offline
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Quote:
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Hello Franco The predecessor should be vertical or horizontal
Wht's you mean for "predecessor" ?
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  #1856  
Old 12-15-2017, 12:15 PM
zixelll zixelll is offline
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Hello
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  #1857  
Old 12-15-2017, 12:23 PM
FrancoItaly FrancoItaly is offline
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Hello
The coil is horizontal, but perhaps it works also vertical.
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  #1858  
Old 12-15-2017, 01:09 PM
zixelll zixelll is offline
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Franco What is the best voltage?
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  #1859  
Old 12-15-2017, 01:15 PM
zixelll zixelll is offline
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Is Vertical Better Suctive or Horizontal?
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  #1860  
Old 12-15-2017, 03:39 PM
FrancoItaly FrancoItaly is offline
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Is Vertical Better Suctive or Horizontal?
Horizontal.
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  #1861  
Old 12-15-2017, 03:40 PM
FrancoItaly FrancoItaly is offline
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Franco What is the best voltage?
12V stabilized (2 X 9V battery)
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  #1862  
Old 12-15-2017, 03:44 PM
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Horizontal.
You mean after 2l of Barbera?

Is not in normal status better vertical?
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  #1863  
Old 12-15-2017, 07:22 PM
zixelll zixelll is offline
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What is the best voltage for calibration?
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  #1864  
Old 12-16-2017, 11:34 AM
FrancoItaly FrancoItaly is offline
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What is the best voltage for calibration?

Look at helps:
Attached Files
File Type: txt Helps.txt (3.3 KB, 974 views)
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  #1865  
Old 12-16-2017, 11:41 AM
zixelll zixelll is offline
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Hello Franco thanks for the capacitor thermometer instead of 22p to calibrate
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  #1866  
Old 12-16-2017, 01:01 PM
zixelll zixelll is offline
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What capacitor Franco is suitable for this device? ceramic . mkt .....
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  #1867  
Old 12-16-2017, 04:06 PM
FrancoItaly FrancoItaly is offline
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What capacitor Franco is suitable for this device? ceramic . mkt .....
Ceramic, as it's a high frequency device. 8Mhz for high gain amplifier and 100MHz for input stage.
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  #1868  
Old 12-16-2017, 04:25 PM
zixelll zixelll is offline
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What can be done to get the best performance for precious metals
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  #1869  
Old 12-16-2017, 04:34 PM
zixelll zixelll is offline
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Transmitter bc550 Is it good for this circuit
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  #1870  
Old 12-16-2017, 04:34 PM
FrancoItaly FrancoItaly is offline
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[QUOTE=zixelll;155959]What can be done to get the best performance for precious metals

I think nothing, but it is already a good result that iron is not revealed.
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  #1871  
Old 12-16-2017, 04:53 PM
zixelll zixelll is offline
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What should be done Iron removes from other metals
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  #1872  
Old 12-17-2017, 06:22 PM
zixelll zixelll is offline
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Hi Franco, instead of using a 22p capacitor of 20 p, will there be a problem or is it 22p good?
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  #1873  
Old 12-18-2017, 10:49 AM
FrancoItaly FrancoItaly is offline
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Hi Franco, instead of using a 22p capacitor of 20 p, will there be a problem or is it 22p good?
No, my lrl works well from 0pF to 33pF, there is anyway the parasitic capacitance of base/emitter junction of TR2 (about 10pF).
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  #1874  
Old 12-18-2017, 04:44 PM
zixelll zixelll is offline
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Thank you guides from Varibell used to calibrate old gold
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  #1875  
Old 12-18-2017, 04:46 PM
zixelll zixelll is offline
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The best voltage for a few volts is calibrated
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