02-28-2010, 07:10 AM
Yay! I've got it working!
I finally found a schematic on the internet for a four-pin vibrator, but for use with a positive chassis, so I modified the schematic a bit. I used two BD243 NPN power transistors in place of the two PNP TIP34. I also replaced the two 2N4234 with two NPN BC639. I mounted everything inside the radio and now plays it, wonderful! I can receive many stations as I tune the radio (I live in Sweden so there are not many stations to receive). I haven't got a power supply powerful enough, so I'm using a couple of lead acid batterys to form a 7,5Ah 6V battery.
I finally found a schematic on the internet for a four-pin vibrator, but for use with a positive chassis, so I modified the schematic a bit. I used two BD243 NPN power transistors in place of the two PNP TIP34. I also replaced the two 2N4234 with two NPN BC639. I mounted everything inside the radio and now plays it, wonderful! I can receive many stations as I tune the radio (I live in Sweden so there are not many stations to receive). I haven't got a power supply powerful enough, so I'm using a couple of lead acid batterys to form a 7,5Ah 6V battery.
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