Delta Pulse

[mohandes]

thanks kt315
i try to finish DP2 and make king cobra .
i will add C40 to C43 and Comparison with last version .but if you can please take video for your DP and past here .
have a good time

[kt315]

ok! yes, certainly I share out every step everybody can be able to repeat those. do not worry, comrade Moha. DP is on stage of checking and tuning...
in last revision of part list I gave due R4 C3 value, tuning PULSE WIDTH TIMING to 150-500 us. thinking this would be good scale for the deeper.

have a fun with DP

[berreizeta]

Hi,

Can anyone tell me what is the value of -E ??


Thanks

[kt315]

-- all measurements in board on DIGITAL ICs (marked DD - DIGITAL DEVICE) you do in reference to -E point.
-- all measurements on ANALOG ICs (marked DA - device analog, operational amplifiers) you do in reference to SCHEMATIC EARTH point, output of DA4:A.
-- in -E level in reference to -BAT=-12V battery pin, you have to see U(D+U(D9)~0,8V+0,8V~+1,6V.
-- shielding point for a coil is +E = +BAT=+12V, positive battery pin.
-- shielding points for housing are +E but via R59 and R60, 100ohm.

[berreizeta]

Exact !! mine = 1.58v ..... but.... don't works

Measurements (IRF740 removed):

TR0 = 12.44v
TR1 = 7.07v
TR2 = 1.67v
TR3 = 1.67v
TR4 = 1.65v
TR5 = 1.65v
TR6 = 6.77v
TR7 = 7.05v
TR8 = 7.06v
TR9 = 1.58v

Thanks KT315

[berreizeta]

Measurements (IRF740 conected):

TR0 = 12.44v
TR1 = 7.06v
TR2 = 1.67v
TR3 = 1.66v
TR4 = 1.64v
TR5 = 1.64v
TR6 = 6.76v
TR7 = 7.04v
TR8 = 7.06v
TR9 = 1.57v

No sound, no detection...., what am I doing wrong ?

[berreizeta]

Inexplicably, now it works ... like a cat in heat, but it works ....

[calebsone]

KT for the connectors will any board mount to wire quick disconnect 2 pin work or do you have a place to find that exact one to fit the out line on the board

[kt315]

Calebsone, you ask about type of connectors at PCB? solder wires directly to the board, I do not see a problem. connectors are standart type,
I take them from trash electronics boards - vga, svga, tv-sets. do not pay for components, take them from trash.
connectors for coil and battery are due same type like that stay in power supply's of personal computers. all are very ordinary standart types.

[kt315]

[kt315]

testing on screwdriver with a pinpointer coil. at the end I got some smoke from MOS-FET ))) fixed the problem... solder VD8 VD9 pads on both sides.
IRF740, DA1, the diodes are alive.

[calebsone]

that's kinda how I get my connectors anyway I just thought you had ones planed so if they fit use them or just solder to the board thanks

[mohandes]

[QUOTE=kt315;185975]testing on screwdriver with a pinpointer coil. at the end I got some smoke from MOS-FET ))) fixed the problem... solder VD8 VD9 pads on both sides.
IRF740, DA1, the diodes are alive.

very nice
your coil is very Attractive , please say me about that .i see you use tl081 but better you use iron lf357 it is my idea.
if you can please add in your board fuse , better Protection.

and i see in your board TLC277CP , why you dont use Tlo62 or 082 .
please say me.
regards

AND i will change my pots like you , because i want finish my box.
have good time.

[mohandes]

hi all guru .
why DP2 unstable in this soil , look these pics when i near these brick to coil have sound , when these brick have 10cm distance to coil have sound .

can anyone solve this problem , or it is natural ?( if natural it is bad to dp )
please guru solve it
regards

[kt315]

try to GRIPE OUT WHAT SECONDARY DELAY makes for. the time. do not be so dummy you are not.
the pot I called also RANGE and now GEB (ground enhanced balance).