DIY Oscilloscope
WARNING POTENTIALLY HIGH VOLTAGE INVOLVED EVEN WHEN DISCONNECTED, DO NOT ATTEMPT IF YOU ARE UNSURE WHAT PARTS ARE DANGEROUS
Using the portable TV in my last post I did a simple hack to convert the tube into a really really crummy oscilloscope. Most likely all it will be able to do is tell me whether the voltage is positive or negative, but thats all I really want it to do.
After moving the horizontal coil signal to the vertical coil the line doesn't go all the way across. I tested both signals in the vertical coil, with a 1.5v battery as input to the horizontal coil. With the vertical signal I get the crazy blobs in these pictures, with the horizontal signal there aren't any wave forms just a straight line which moves up/down depending on the input.
This is the entirety of the hack, moved wires from the horizontal coil to the vertical one and added some inputs to the horizontal coil:
![DIY Oscilloscope - Connections](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_vW0fDlCf6P1_nTgLcapmjMmCguoawKCyQh00Nw6ohqHtO74O0aUP5hLw3OWnZ9-JcmFj7ZH2YzbniWokDWKXaiztfCxHJZsOIptZyuzkoVRhlCK7tfa9NSnQDyWbI1pA=s0-d)
Voila, +1.5v:
![DIY Oscilloscope - Positive](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_vkvek1AT8txBMMyl2YslmWOzwchxWsM9pbqRZ2S6h46BHcL3sn_T0idQBg7b0wR_2uMc4Z7IFsbo5u4i6l9iAlRJLslxIOEc2aCCyIJv9JroBq9fFzztgjYVX5CdP4spE=s0-d)
And -1.5v:
![DIY Oscilloscope - Negative](https://lh3.googleusercontent.com/blogger_img_proxy/AEn0k_tGknH9CHQBGZvZCH__WcHmPtcWHmaweBe4dEF2EKnSqbzuQWUP2QVPpXXN6A-YV5bnzImffqUtd6yNRC_MpzLAFPdw-i72Nx5aQIKx0gRdYu7MIlBln1nCaYllWeebxfE=s0-d)
Here it is at rest:
Using the portable TV in my last post I did a simple hack to convert the tube into a really really crummy oscilloscope. Most likely all it will be able to do is tell me whether the voltage is positive or negative, but thats all I really want it to do.
After moving the horizontal coil signal to the vertical coil the line doesn't go all the way across. I tested both signals in the vertical coil, with a 1.5v battery as input to the horizontal coil. With the vertical signal I get the crazy blobs in these pictures, with the horizontal signal there aren't any wave forms just a straight line which moves up/down depending on the input.
This is the entirety of the hack, moved wires from the horizontal coil to the vertical one and added some inputs to the horizontal coil:
Voila, +1.5v:
And -1.5v:
Here it is at rest:
Wow, be careful with electricity.
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