This stabilizer was designed to supply the PBX (Private branch exchange) up to 10 rooms. Input voltage +65 VAC, Output voltage 55 … 65 V, load current 100 mA.

Parts list :
R1 : 1K
R2 : 6K2
R3 : 3K
R4 : 10 K Variable
R5 : 3K
C1 : 1000uF/100V
C2 : 47nF
C3 : 200uF/100V
VD1 : KU405E
VD2 : KC527A
VT1 : KT815A
VT2 : KT3102A
FU1 : 0.5A
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