Touch the socket circuit diagram
#touch sensor
#neon tube
#photoresistor
#opto-coupler
#light control
#metal sheet
#resistance change
#circuit diagram
Description: The circuit operates by detecting a finger touch on a metal sheet (S), which activates a neon tube light (N). The combination of the neon tube and a photoresistor (RG) acts as an optocoupler, reducing the resistance of RG. This reduction allows sufficient trigger current to flow through the TRIAC (VS), enabling the electric socket load (CZ) to function. Simultaneously, a 220V AC voltage is rectified through bulk capacitors (C2) and diodes (VD1 and VD2), regulated by a voltage regulator (VDW) and filtered by capacitor (C1) to provide a DC voltage to resistor (R2) connected to the gate of TRIAC (VS). Even after the finger is removed from the metal sheet, TRIAC (VS) remains activated, allowing the load connected to CZ to continue operating normally. In the event of a power outage, TRIAC (VS) does not receive enough trigger current to remain on, thus cutting power to the load connected to CZ. The circuit requires a touch on S to reactivate the load. When no load is connected, the socket consumes minimal power (approximately 0.5W), with a load capacity of up to 500W. Notably, if the socket is unloaded, touching S does not energize the socket. Component selection includes standard neon tubes for N, MG-45 model for RG, a 12V zener diode for VDW, and 1/4 W resistors as needed. Other components are detailed in the accompanying schematic.
The circuit utilizes a TRIAC (VS) to control the AC load connected to the socket (CZ). The operation begins with the finger touch on the metal sheet (S), which causes the neon tube (N) to illuminate. This illumination decreases the resistance of the photoresistor (RG), allowing current to flow and trigger the TRIAC (VS). The TRIAC serves as a switch, controlling the power to the load based on the trigger current it receives.
The AC voltage from the power supply passes through bulk capacitors (C2) and diodes (VD1 and VD2), which rectify the AC signal into a DC voltage. This DC voltage is then regulated by a zener diode (VDW) to ensure a stable output voltage, which is essential for the reliable operation of the circuit. The filtered output is applied to resistor (R2) that is connected to the gate of TRIAC (VS), ensuring that the TRIAC remains in the conducting state even after the finger is removed from the metal sheet.
The circuit's design allows for a load capacity of up to 500W, making it suitable for various applications. The feature that prevents the socket from becoming live when no load is connected adds a layer of safety, ensuring that the circuit does not waste power or pose a risk when idle. The choice of components, including the MG-45 photoresistor and standard neon tube, reflects a balance between performance and availability, ensuring that the circuit operates effectively while remaining cost-efficient.
Overall, the circuit is efficient and user-friendly, providing a reliable means of controlling an electrical load through a simple touch interface while maintaining safety and energy efficiency. Circuit as shown, with a touch of a finger when the metal sheet S, N neon tube light, since N and photoresistor RG constitute optocouplers make RG resistance becomes smaller, s o the TRIAC VS because sufficient trigger current lead pass, it was electric socket load CZ on working. At the same time, 220V AC voltage through the CZ bulk capacitors C2, the diode VD1 and VD2 rectifier, regulator VDW regulator, filter capacitor C1 obtained by the DC voltage applied to the resistor R2 VS the gate, even if S has left finger touch, VS remains turned on, so that the load connected to the CZ normal power work.
When power is restored after power outage, because VS has not been enough to trigger current, it is not turned on, the load on the CZ is powered off. Only CZ retouches to make the load on the power. When not connected to the load circuit, the socket itself has little power (about 0.5W). Socket load capacity of up to 500W. The circuit also has a feature: when there is no load on the socket, even though the touch of S, the socket is not live.Component selection: Choose a neon tube N ordinary neon tubes, photoresistor RG choose MG-45 models.
VDW select regulator for the 12V zener diode. Resistor selection (1/4) Ws. Other components shown in FIG.
The circuit utilizes a TRIAC (VS) to control the AC load connected to the socket (CZ). The operation begins with the finger touch on the metal sheet (S), which causes the neon tube (N) to illuminate. This illumination decreases the resistance of the photoresistor (RG), allowing current to flow and trigger the TRIAC (VS). The TRIAC serves as a switch, controlling the power to the load based on the trigger current it receives.
The AC voltage from the power supply passes through bulk capacitors (C2) and diodes (VD1 and VD2), which rectify the AC signal into a DC voltage. This DC voltage is then regulated by a zener diode (VDW) to ensure a stable output voltage, which is essential for the reliable operation of the circuit. The filtered output is applied to resistor (R2) that is connected to the gate of TRIAC (VS), ensuring that the TRIAC remains in the conducting state even after the finger is removed from the metal sheet.
The circuit's design allows for a load capacity of up to 500W, making it suitable for various applications. The feature that prevents the socket from becoming live when no load is connected adds a layer of safety, ensuring that the circuit does not waste power or pose a risk when idle. The choice of components, including the MG-45 photoresistor and standard neon tube, reflects a balance between performance and availability, ensuring that the circuit operates effectively while remaining cost-efficient.
Overall, the circuit is efficient and user-friendly, providing a reliable means of controlling an electrical load through a simple touch interface while maintaining safety and energy efficiency. Circuit as shown, with a touch of a finger when the metal sheet S, N neon tube light, since N and photoresistor RG constitute optocouplers make RG resistance becomes smaller, s o the TRIAC VS because sufficient trigger current lead pass, it was electric socket load CZ on working. At the same time, 220V AC voltage through the CZ bulk capacitors C2, the diode VD1 and VD2 rectifier, regulator VDW regulator, filter capacitor C1 obtained by the DC voltage applied to the resistor R2 VS the gate, even if S has left finger touch, VS remains turned on, so that the load connected to the CZ normal power work.
When power is restored after power outage, because VS has not been enough to trigger current, it is not turned on, the load on the CZ is powered off. Only CZ retouches to make the load on the power. When not connected to the load circuit, the socket itself has little power (about 0.5W). Socket load capacity of up to 500W. The circuit also has a feature: when there is no load on the socket, even though the touch of S, the socket is not live.Component selection: Choose a neon tube N ordinary neon tubes, photoresistor RG choose MG-45 models.
VDW select regulator for the 12V zener diode. Resistor selection (1/4) Ws. Other components shown in FIG.
Simple Touch Alarm circuit
Touch the sensor of the alarm with your finger, and it starts beeping. It continues for a period and then stops. Touching it again will activate the beeping once more.
This description outlines a basic touch-activated alarm system. The circuit...
860 Watt limited-range light control
The system is designed to regulate an 860-watt lamp load from half to full power. This is achieved through the controlled half-plus-fixed half-wave phase control method. Applying half power to an incandescent lamp results in 30% of the full light...
Touch Sensor Circuit
This project utilizes two wires, one red and one blue, which function as touch sensor wires. When a person touches both wires, the circuit closes, allowing current to flow and illuminate the LED. A 9-volt battery or an external power...
Simple One-Wire Touch Detector
This simple circuit can be used to activate various devices, such as microcontrollers, relays, secret alarms, or even to turn on LED1, which illuminates as long as a metal plate is touched. The circuit consists of a voltage divider with...
Automatic light control circuit curtains
The circuit operates as follows: each morning, light enters the silicon photocell, generating a force that causes transistor VT1 to conduct. As a result, capacitor C charges, leading to an increase in voltage. This rising voltage causes the emitter current...
Neon tube flasher
The voltage required to ignite the neon tube is generated by utilizing a standard filament transformer (240-6 V) in reverse. The battery drain is minimal, approximately 1 to 2 milliamps for a nine-volt battery. The pulses from Q1, a unijunction...
latest touch alarm system circuit
The operating voltage for capacitors C1 and C2 should be raised to 25V if a 12V energy source is used. A general guideline is that the operating voltage of capacitors should be at least double the supplied voltage; for instance,...
Photoresistor LDR light control switch circuit diagram
The circuit depicted involves a photoresistor (LDR) connected to a transistor, which operates at either a high or low level based on light conditions. The amplification factor of the transistor is 100, which is adequate for the application. The resistance...
Dark and Light Activated Relay
This is a basic dark and light sensor that uses a photoresistor as the sensing component. The transistor functions as a switch; when the switch is in the "on" condition, the relay will be activated. The potentiometer adjusts the trigger-on...