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Touch switch project

Touch switch project using 4011, BC557

Battery Control Charger Circuit Diagram

Battery Control Charger Circuit Diagram using LMC1062, LMC4042, 74HC174, ZMR500, ZVN4206A

need schematic diagram RCA ac/dc TV set, model E09304WH, chassis TX825NC. AC power supply resistors burned up.

Bernie H asked: The model no. and chassis no. are on the back of the set, not on the remote. Date of manufacture Oct. 1995. Small portable TV set 115v./12v for RV use. Works ok on 12 volts, 3 or 4 resistors in 115v circuit fried.

tube Amplifier circuit

tube Amplifier circuit using 12AT7, EL84

Making FM transmitter 0,4 W

Circuit electronics FM transmitter 0,4 W 12-14 V stab., 100 mA RF : 400 mW Impedance : 50-75 ohm Frequency range : 87,5-108 MHz Modulation : wideband FM C1, C2, C12 – 100 pF (ceramic) C3, C5 – 0,22 uF (electrolytic) C4 – 1,8 nF (plastic) C13, C16, C17, C19 – 1 nF (ceramic) C8, […]

20W HiFi Power Amplifier Using TDA2040 circuit diagram

20W HiFi Power Amplifier Using TDA2040 circuit diagram This is a Hi-Fi power amplifier circuit build based on single power amplifier IC TDA2040. The single TDA2040 has able to deliver 20W power output. The bridge amplifier which consist of double TDA2040 can deliver 30W power output (8 ohm loudspeaker). 20W HiFi Power Amplifier Using TDA2040 […]

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