autometic voltage stabilizer circuit for 90V| wth digital display & without display | high low timer

Dosto is vedio me 90V se banne wale automatic Voltage stabilizer me use hone wale 2 circuits ke bare me btaaya gya Jo ki ache price par available ho jaate h hai or achi quality me bnaaye gye h ap yaha se purchase bi kar sakte hai thank you
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[@ParimalSikdar-ni6qq]

Sir w s no nehi diya

[@vjelectronic2443]

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