Delta Pulse

[ivconic]

Use BC557 and BC546...

[tuxnor]

work in progress

If you live in Sweden BC, if you live in USA 2N. If not you can compare characteristic too.

snow is soon gone..what transistors are you using guys..bc546 or 2n series ?

Thanks =)

is what i suspected .i can buy both here in scandinavia.

bouth are 0.2A
info on 2n3904 say nothing about how many W.
On schema for xr71 there is used bc series..so i guess it`s ok to use any of them ..with no leek in performance ?
BC 546
TRANSISTOR SILICON NPN / 80V / 0.2A / 0.5W

2N 3904
TRANSISTOR SILICON NPN / 60V / 0.2A/B = 100-400

[WM6]

snow is soon gone..what transistors are you using best..bc546 or 2n series ?

If you live in Sweden BC, if you live in USA 2N. If not you can compare characteristic too.

[tuxnor]

work in progress

snow is soon gone..what transistors are you using best..bc546 or 2n series ?

[geminis74]

SIBI 1,5 nF, see pag. 25 post 606

[SIBI]

C4, C5, C6 are 1,5 nF or 150pF like in other schematics?

[WM6]

hi. write me what power pulse width you mean of, I will measure a current for you.

Hi KT315, I am not interesting in single pulse but in fully DP battery consumption.

Hi KT315, aš nesu įdomi galia vienetinio impulso, bet visiškai Delta Pulse baterijos suvartojimą.

[nelson]

Hi kt315, finally i solve my problem with no sound from delta pulse. The problem was a broken volume pot.
The potenciometer, was rotating fine, but for some reason, there was not resistance. I presume a factory fail.
Anyway, thanks to you and all members who help me to find the problem and for shure i had learn a little more about delta pulse and how to detect fails.

Regards

Nelson

Nelson, with T9 soldered you must get a sound in any THRESH tuning position, I think. try reconnect that I did draw here and you must hear a sound. decrease R44 value to 20-33 Ohms. desolder R45 too. also check R46 - it must be 2-2,2 Ohms.

[kt315]

HI KT315, did you measured power consumption of your Delta Pulse? Thanks

hi. write me what power pulse width you mean of, I will measure a current for you.

[WM6]

Lithuania is very very poor on golden occurence. nothing of goldfields here. what I will do with GoldScan? that is the question.

HI KT315, did you measured power consumption of your Delta Pulse? Thanks

[kt315]

Lithuania is very very poor on golden occurence. nothing of goldfields here. what I will do with GoldScan? that is the question.

[batman1972]

DP

My friend KT315
Thanks for ur reply.Did u construct GoldScan 4 before?

[kt315]

oops! all photos above are not mine. these done by Sergei, aka Treiti.

[ivconic]

I am also using that pcb. Made over 30 DP's so far.
Very good pcb indeed!

[kt315]

dear batman,

I used 'classic layout' PCB that did my friend in Latvia. I see many versions of PCB layout in the forum... huge amount!... can say nothing about these! you do all on your funk and risc