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Uploaded by Zone51 on Jan 5, 2011
This is an "open circuit" telegraph. The buzzer is a simple astable mulvibrator with transistors.
Science & Technology
Standard YouTube License
@mbro96 yes! :) But if the capacitance is too low, the sound's frequency would be too high to be eard.
Zone51 6 months ago
can the capacitor be home made?
mbro96 6 months ago
@jeriellsworth thank you! I wanted a higher tone, but i didn't have the right capacitor value.
Zone51 1 year ago
I like the sound. Has a little attack.
jeriellsworth 1 year ago
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@mbro96 yes! :) But if the capacitance is too low, the sound's frequency would be too high to be eard.
Zone51 6 months ago
can the capacitor be home made?
mbro96 6 months ago
@jeriellsworth thank you! I wanted a higher tone, but i didn't have the right capacitor value.
Zone51 1 year ago
I like the sound. Has a little attack.
jeriellsworth 1 year ago