Power Supply and Mute Control Circuit using 7815 and 7915 , BC549 , Relay
Posts tagged transformer
hspd 12 piv circuit using 2N3439
hspd 12 piv circuit using 2N3439 hspd 12 piv circuit using 2N3439 R1 …………. 33K ohm R2 …………. 100 ohm VR …………. 1K ohm c1 …………. 50uF – 450V TR1 ………… 2N3439 TR2 ………… 2N3439 T1 Transformer Pri: 110 – 220V Sec: 0 – 220V 5mA
NOISE REDUCTION PROCESSOR circuit
NOISE REDUCTION PROCESSOR circuit DOLBY B-TYPE NOISE REDUCTION PROCESSOR KA2271 DOLBY B-TYPE NOISE REDUCTION PROCESSOR KA2271 The KA2271 is a monolithic integrated circuit designed for use in Dolby* B-type reduction systems. FEATURES Few external components Low quiescent circuit current (Typ Iccq=4.3mA) High crosstalk rejection ratio. Built-in NR-switch, REC/PB-switch. Recommended supply voltage: Vcc=8V~16V.
Feedback Exterminator Storing Microphone
Feedback Exterminator Storing Microphone Circuit diagram Feedback Exterminator Storing Microphone using Transistor
