Photocell Activated Toys
#photocell
#light sensor
#toy activation
#automation
#light-dependent resistor
#sensor circuit
#electronic switch
#DIY electronics
#light control
#hobby projects
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Light control relay control lamp
The circuit operates on 220V AC input, which is transformed to approximately 12V DC using a step-down transformer (T), a diode bridge rectifier (VDI-VD4), and a filter capacitor (C1). This setup is designed to power the entire circuit. The light...
Put That Light Out
If the light in a seldom-used room, such as a loft, is forgotten and left on, it can remain illuminated for extended periods, leading to significant electricity costs. To address this issue, electronics enthusiasts can design a simple circuit to...
Sun Light Chaser
With RFT illuminated, point R goes to 0 volt and LM runs. With LFT illuminated, point R goes to 0 volt and RM runs. With RFT and/or LFT not illuminated, points R/L go to +9 volt; P1 and P2 controls...
Light Controlled Relays
The first circuit energizes the relay when the light rises above the preset level. The second circuit energizes the relay when the light falls below the preset level. The two circuits are practically identical. The only difference between them is...
light sensor circuit
This is a light sensor circuit designed to detect light and activate a relay. The circuit is straightforward and requires only a few components. The operation of the circuit is simple: when the photoresistor detects light, it will turn on...
Optical tracking control circuit
The photocell photoelectric tracking circuit is configured with two identical photoelectric cells that serve as light-receiving devices. When the incident light intensity is equal, the system is able to track in a predetermined manner. If there is a slight deviation...
Most Popular Circuits
A simple light-activated switch circuit diagram utilizes the National Semiconductor comparator IC LM311 and a light-dependent resistor (LDR). The circuit functions as a voltage comparator, with the non-inverting input of IC1 receiving a reference voltage of 6V through resistors R3...
model train detector using photocell
This photocell is best mounted at tie level between the rails. The variable resistor adjusts the sensitivity of the circuit. This circuit can be powered by either 6 or 12 volts - BE SURE to use the proper relay; More:...
Light beam operated on-off relay
When a beam of light strikes the photocell, the voltage across the neon lamp NE-1 rises sharply. NE-1 turns on and triggers the SCR. K1 is an impulse relay whose contacts remain in position even after the coil current is...