Delta Pulse

[chamin]

help sorry i don not how put a new post but i have construct a delta pulse 2 and dont work have sound but donot detect, when i conect the bobin transistor q1 is very hot and donot detect, somebody kenmy help, and i sorry i don speak ingles but i need help thank you

[Speedy_G]

[ATTACH]27598[/ATTACH]

Thanks, Orbit.
But the TeknolojiEkibi Demo you uploaded still gave error message as follows:



It seems that the Demo file could be damaged.

Ciao

Speedy_G

[aaksts86]

do you see what there written on R5????

да вижу ... что р5 надо настроить .....но как правиль ето делать? на пример ... у меня катушка .. 40 диаметр и 3.7ом 0.550мхенр. .... поставил р5 от 500ом до 2к .... и чуика одинаково .. картина номер1 уменя с 500ом а картина номер2 с 1.8

[kt315]

do you see A SIGNAL TRANSFORMATION in this GIF? do you see your PNGs in this GIF?

[Orbit]

strange my simulator ?says this !

[Qiaozhi]

да вижу ... что р5 надо настроить .....но как правиль ето делать? на пример ... у меня катушка .. 40 диаметр и 3.7ом 0.550мхенр. .... поставил р5 от 500ом до 2к .... и чуика одинаково .. картина номер1 уменя с 500ом а картина номер2 с 1.8

Please read the forum rules -> Basic Rules of the Forums
and make your posts in English.

[6666]

circuit diagram

[ATTACH]27597[/ATTACH]

Wasnt there a mod that added a 10k R between T3 and -Bat

[kt315]

I remember this mod, have checked it... did not see something specific in stability increasing.

[g.s]

Thank you kt315 to answer YOUR..
MERRY CHRISTMAS

[g.s]

GOOD EVENING TO ALL..
I changed the diode sttf1210 with byv28-200, The result is that the voltage reaches up and its 240 voltage While the diode stth1210 in 210 voltage.the byv28-200 has a smaller REVERSE RECOVERY TIME (trr) the value of is 30ns...
This can be an advantage what is your opinion..

[mohandes]

any body make new dp2 ,designed by KT315 ??

[kt315]

I have wrote manufacturer, www.pcbsourcing.com and wait a reply, but no still answering (( this is strangely.

[Silver Dollar]

Hey Guys I often wondered what the circuit framed in yellow does in this design?

Modify pulse width based on ground loading? Anyone know?

[Jose]

Hey Guys I often wondered what the circuit framed in yellow does in this design?

Modify pulse width based on ground loading? Anyone know?

I do not know exactly.
I learned that when a large metal, coil to approaches increases the delay, possibly to avoid overload.
In a modified DP for coins (decrease delay and increase in frequency), disconnect the collector VT2, to bypass this circuit.
By this I get softer the "delay" setting.
regards

[kt315]

had answered many times... something like a protection from overloading of amp part, on big target near coil. working such way. if a signal gains to some level this circuit turns on and moves out primary sample pulse in a range with more low amplitude - ie at right side of 'delta' pulse.