Julian's Postbag #155 - Voltage and Current Meter

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Voltage and current meter bought on Aliexpress.

Unfortunately this item is no longer available :(

Aliexpress links:
https://www.aliexpress.com/item/32957814319.html
https://www.aliexpress.com/item/32957990278.html
https://www.aliexpress.com/item/33024145732.html

The 300V buck converter:
https://avdweb.nl/tech-tips/tips-2/ft8430-high-input-voltage-buck-converter-in-sot23-3

The energy monitor chip:
https://docplayer.net/143479228-Rn8209c-rn8209d-user-manual.html

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https://www.youtube.com/channel/UCXfDjPehpC7B7lW2JFxeS4w

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Видео Julian's Postbag #155 - Voltage and Current Meter канала Julian Ilett