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Treasure Hunting & Metal Detecting Forum Message Boards - Detector Hunter Whites Minelab Tesoro XP > Tech Talk > Metal Detectors > PI Designs & Deepseekers (Moderators: Eugene52, Cornelius) >

Goldscan Pulse IV

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Eugene52 Topic starter

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	Goldscan Pulse IV « on: July 20, 2009, 06:09:55 PM »

Hello . This will be the new [re-directed] home for Goldscan pulse IV builders . Regards......Eugene

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	Re: Goldscan Pulse IV « Reply #1 on: July 20, 2009, 07:24:05 PM »

Hello Electrosoft . The pc board seems ok . The schematic diagram in the pdf folder shows that Q1 and Q2 both have the emitter arrows backwards on each . And R-50 should be 470 k ohm instead of 10 k ohm . ..............Regards...........Eugene

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	Re: Goldscan Pulse IV « Reply #2 on: July 20, 2009, 09:15:02 PM »

Hello . It looks like the two correction images were really made for the the schematic version here . So these three actually go together . But I would use the pdf folder I posted in my last thread . And these down here can be used just for reference !!
Regards.......Eugene

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	Re: Goldscan Pulse IV « Reply #3 on: July 21, 2009, 05:15:46 AM »

thanks Eugene for your help i will tray to built it as soon as possible and to post result

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	Re: Goldscan Pulse IV « Reply #4 on: July 22, 2009, 10:28:26 AM »

hi Eugene

this part are missid in my country

Bat 85 same bat 42 or not?
Bat 49 any cross referance ?
tc4538 are same with 74hc4538E or not ?
1n914 any cross referance ?
OA85 any cross referance ?

thanks for your help

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	Re: Goldscan Pulse IV « Reply #5 on: July 22, 2009, 11:11:05 AM »

	Quote:	Posted by electrosoft
Bat 85 same bat 42 or not? Bat 49 any cross referance ? tc4538 are same with 74hc4538E or not ? 1n914 any cross referance ? OA85 any cross referance ? thanks for your help

Hello Electrosoft . 1N914=1N4148 , OA-85=NTE109, TC4538=74hc4538e BAT49=1N5711 , BAT85=BAT42 Regards......Eugene

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	Re: Goldscan Pulse IV « Reply #6 on: July 22, 2009, 06:25:13 PM »

thanks for all

i have olso this part missid

2SK163-K,L,M
2SK381
2SK43
2SK435
TMPFJ113

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	Re: Goldscan Pulse IV « Reply #7 on: July 22, 2009, 10:31:35 PM »

	Quote:	Posted by electrosoft
thanks for all i have olso this part missid 2SK163-K,L,M 2SK381 2SK43 2SK435 TMPFJ113

Hello . Here are 3 more good substitutes for J113:..................Regards.......Eugene

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	Re: Goldscan Pulse IV « Reply #8 on: July 24, 2009, 08:19:02 AM »

Hello . Here are 3 more good substitutes for J113:..................Regards.......Eugene

hi this 2 transistors is good cross ?

2N3824 N-FET 50V 10mA 0.3W
2N3821 N-FET 50V 2.5mA 0.3W

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	Re: Goldscan Pulse IV « Reply #9 on: July 24, 2009, 10:55:04 AM »

	Quote:	Posted by electrosoft
Hello . Here are 3 more good substitutes for J113:..................Regards.......Eugene hi this 2 transistors is good cross ? 2N3824 N-FET 50V 10mA 0.3W 2N3821 N-FET 50V 2.5mA 0.3W

Hello Electrosoft . Use the 2N3824 !!
Best Regards.........Eugene

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