Brads Electronic Projects Forum

Blast I forgot the k....

Okay that makes sense

Thanks

Alright so I said at the beginning that the motor draws about 30mA of current, not I tested it again only this time I applied some pressure to simulate a load (the motor is going to be rocking a platform with a container full of etchant) and it went up to 80/100 mA so lets say 100mA as a max current...

Well Ive started out with the basic distortion pedal using just an opamp pretty much. Ive been thinking of slowly bumping up slowly until reaching the more difficult ones like the delay pedal which used a bunch of digital circuitry I believe. After I have a decent set of pedals Id like to build some...

I have a 330 ohm temporarily but i might look for a higher power rating or a higher value like a 1k.
Any thoughts?

Thanks

I swapped out the 555 and it worked perfectly, it probably burned out with the 33 ohm resistor

Any guitar hardware and accessories enthusiasts here? such as effect pedals, amplifiers, etc.

Thanks a lot that was very helpful

Yes i did and its a constant 12V output from the 555, now I dont know if that is caused because the 555 burned up along with the 33ohm resistor or if there is another issue causing it

Hello Ive been learning digital logic for a few months now using vhdl and an fpga to do all my school projects and labs. One of the things that confused me at the beginning was that the buttons on the development board acted as active low components rather than the more intuitive '1' when you press ...

Heres the link to the motor: http://www.amazon.com/Nextrox-Mini-Torque-Electric-Motor/dp/B00BX54O8A/ref=sr_1_1?ie=UTF8&qid=1458131515&sr=8-1&keywords=12+volt+high+torque+moto The motor is not carrying any load for now so maybe thats why the current is so low? the 33 ohm resistor started smoking and ...

Quick Update, Ive tested the Transistor separately and it seems to work just fine, im guessing the problem would be the 555

Hello, the motor draws about 30mA with just the 12V DC supply. I tried plugging the oscilloscope to the 555 output (the circuit was assembled in a home made PCB) and it seemed to give me a steady 12V DC waveform. When the circuit had the 33 ohm resistor I remember the 555 being extremely hot as well...

Hello, I found this circuit online used as a PWM for a DC motor. I am using a 12V high torque motor and the problem is the 33 ohm resistor pretty much explodes, I checked the voltage and there was an 8 volt drop so it makes sense it would burn up being a 1/4 watt resistor. In the website where I fou...

I guess ill have to make a more thorough check because from a quick look i took that did not seem to be the problem

Thanks again

I guess i can try that, could there be any other source for this problem?

Thanks