My first attemp to solid state, with HV transistor burn-in test

[denwam]

Hi everybody
This is myfirst SS SSG experiment, after i try standard SSG motor-energizer.

I use standard SSG circuit, but i use high voltage transistor MJE13007 instead of 2N3055 or MJL series because of my earlier "accident" of mass toasted transistors ( 2N3055 , "jengkol" transistors / search the meaning of jengkol in Bahasa). This transistor can withstand up to 700volt per datasheet, but I can't trust this spec, so I limit my system 250V safe, (you know, American components, Russian components, All... made in Taiwan ....., says the kosmonot and my local supplier in Indonesia )

here we go to the pics : (left to right : the circuit, my ex SSG rotor, SS SSG without charging battery, input from ATX PSU series with multimeter, attached to charging battery (china electric bike scavenged batt.) please give this newbie a lot of advices, thanks

[Joster]

Howdy,

What are you using as a trigger?

[serkan90]

I am looking the datasheet of the MJE13007 and it is mentioned there that this transistor is suitable for 115V to 220V and you are you using it for 250V. Is it safe to operate it at 250V? And one for thing what is the current requirement for this circuit?

[denwam]

Absolute maximum rating
Vce when transistor OFF = 700V, sustaining at 400V
Collector current 8A
Peak collector current 16A

I have test this transistor on my experiment setup, run SSG for 1 hour without using neon bulb across thee transistor. The transistor still work

[denwam]

the trigger method and whole schematis was same as the standard SSG, different sweetspot from the oroginal 2N3055, lower resistor value about 200 to 470 ohms on my system.