Simple HF sine wave oscillator 15 KHz - 160 KHz with a 555 Chip schematic and demo

Simple sine wave oscillator made with a 555 Chip, working between 15 KHz and 160 KHz. Video not made for children. First video is here https://youtu.be/6Lwh1xzn_yQ
That first video shows the triangle wave oscillator via that the sine wave was derived.

The triangle wave at the output of the 555 is changed into a sine wave by a filter, made with a BF245 (N-FET) used as impedance transformer/filter and a BC 547 b (NPN mesa transistor, usable up to 9 MHz). Combined with the right R-C values in this frequency range.

Schematic & demo are in the video. It works properly between 15 KC (KHZ) and 160 KC (KHZ). The amplitude (output level) varies in this broad frequency band, could be a problem, but that can be cured via an extra amplifier stage with (say) a BC 547 b.

Such a universal broadband 1 transistor amplifier is on my YT channel.

E.g. here https://youtu.be/7IHjYesM7UM


All the videos hat I have published on You Tube can be found via my Channel Trailer: Link is

https://youtu.be/xbgQ8T3oqh4

In thematic order you can find these video’s under the “comments” section.
Important: to find all the links to the (+/-700) video’s on my YT Channel, select, in the comments section, “NEWEST FIRST”

My books about electronics are available via the website from “Lulu”, search for author “Ko Tilman” there.

https://www.lulu.com/shop/search.ep?keyWords=ko+tilman&type=

There is an important video via which you can buy a document where I give links to many of my video’s, published between 2010 and 2018.

Link is: https://youtu.be/XXRsA24NUE0

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Regarding all my video’s: I constantly keep them actual, so the original video’s with the most recent information are always on YouTube. That is the source, and search there. When my video’s are reproduced or re-edited on other websites/channels you can not (!) be sure about the original content (=really working electronics with real properties for a purpose) and important adaptations to the circuits.

Be aware of that, I saw on the internet my circuits reproduced in a poor or not proper way.

I also found that people probably republish my circuits under phantasy names and/or with phantasy properties, not knowing electronics. Sometimes they want to find gold with them. I take distance from all these fake claims; I cannot help that it happens, sorry. Upload 5 december 2019.