Thanks i might try building this with some lower powered transistors and see how i get on. I studied electronics 20 years ago and this will be my first go back at it in about 15 years so i do have some knowledge inside somewhere, ill just have too root it back out lol.I'm going to say yes. You would need to replace the relay and change some resistor values.
Ken
oh right thanks, so it would be basically just a lower voltage relay and try to get the circuit to operate as is by changing resistances?Those transistors will work fine at 5v-9v.
Ken
Sorry this is my fault. I probably should have started a new thread instead of continuing this one. (lol im new)In your original schematic, the voltage at the SCR gate will only be a few millivolts. You need a voltage gain stage for your transistor amplifier to get the voltage to a level to fire the SCR.
Didn't realize this thread was so long. Someone might have already pointed this out.
No, the SCR1 (2N5064) is a sensitive-gate silicon controlled rectifier. The MBR1535CT is a Schottky rectifier. Two totally different animals.Cheers iv been looking online at my local store the only component i will seem to have any difficulty getting will be scr1. Would i be correct in saying this is a rectifier? and would the likes of MBR1535CT be a suitable replacement?
Also the relay is likley to be an N15AW (provided there in stock.,lol)
Thanks again, yep i spotted my mistake about the rectifier in the store this morning, i couldnt get a 2N5064 all they had was a CP106D but i think that will do the job. Also got quite a selection of components (although i bet if i go to make something else ill be short something) Its a more expensive hobby than i had anticipated i spent over 300 lol the missus will kill me if she finds out, anyway hope to get this working over the weekendNo, the SCR1 (2N5064) is a sensitive-gate silicon controlled rectifier. The MBR1535CT is a Schottky rectifier. Two totally different animals.
No, the N15AW is a 12V relay. For a 9V supply, you need a 9v or 5V relay.
Ken
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