The circuit in the picture when connected to a telephone line with any incoming calls will allow the lamplight. Circuit is in two parts and the two circuits are separated from one another by MOC3020 optocoupler. MOC3020 Optocoupler, without an electrical connection between the low voltage with high voltages and currents can control is called circuit elements. Lower portions of the first circuit is to be connected to the telephone line.
Calls that come through the telephone line telephone line on any AC voltage up to 75V take a value. These values of R1 and C1 through materials made with 1N4007 diode bridge 4 and then enters the direct current is processed by the circuit is controlled. DZ1 zener any phone calls by these parts is fixed to 33V. Thus optocouplers are protected.
The second circuit, the mains is to be controlled with high regions. This moiety, R1, R2, C4, and triac BT137 TRC1 consists of a 220V lamp. When any phone calls, through the optocoupler’s photo bt137 triac gate terminal portion is triggered and the lamp gives light. Light export process continues until the drop in voltage from the mains.
MOC3020 Pinout BT137 Pinout
Published: 2012/05/22 Tags: analog circuits projects, simple circuit projects
CD4017 CD4069 Relay Control with Remote Control
Any with a remote control relay to control prepared a simple circuit application CD4017 CD4069 integrated based on the microcontroller is not used it dez has advantages, but the programming work to deal with people who prefer not an ideal circuit diquat should be TFME5260 IR receiver sensor best to position the writer circuit ceiling lamp used to turn the relay output is used for the CD4017 can be controlled in different devices .. Project has started drawing eagle schematics and pCB ..