Door-opener
The door opener is powered by a 9-V battery. A momentary-contact switch, labeled as 52, is included for manual opening and closing. Relay K1 is a 9-V type, while relay K2 is a latching type rated for 117 Vac, which automatically latches with the first burst of current and opens with the second burst. The gate lead of the LASCR is not utilized; instead, a light source activates the LASCR unit, allowing current to flow through the relay coil. This action causes the contacts of K1 to close, which energizes K2 (closing its contacts) and operates the garage door motor.
The door opener circuit is designed to facilitate the automatic operation of a garage door while also allowing for manual control. The power source, a 9-V battery, ensures that the system remains operational even during power outages. The momentary-contact switch (52) serves as a user interface, enabling the operator to manually engage or disengage the door opener as needed.
Relay K1, functioning at 9 V, acts as a primary control mechanism within the circuit. When the momentary-contact switch is activated, it energizes K1, closing its contacts. This action allows current to flow to relay K2, which is a latching relay rated for 117 Vac. The latching mechanism of K2 is critical; it remains in its last state (either open or closed) until the next pulse of current is applied. The first pulse energizes the relay, closing its contacts, while the second pulse de-energizes it, opening the contacts.
The LASCR (Light Activated Silicon Controlled Rectifier) plays a pivotal role in the circuit by responding to light signals. When the LASCR is triggered by a light source, it conducts, allowing current to flow through the coil of relay K1. This activation is essential for the operation of the door opener, as it ultimately leads to the energization of K2, which directly controls the garage door motor.
The overall design of this door opener circuit incorporates safety and convenience features, ensuring reliable operation while accommodating both automatic and manual controls. The integration of relays and the LASCR provides a robust solution for garage door automation, enhancing user experience and operational efficiency.The door opener derives its power from a 9-V battery. A momentary-contact switch, 52, is provided in the event that manual opening and closing is required. Relay Kl is a 9-V type and relay K2 is a 117"Vac latching-type, which automatically latches with the first burst of current and opens on the second burst.
The gate lead of the LASCR is not used; a light source triggers the LASCR unit into conduction, causing current to flow in the coil of the relay. That, in turn, causes Kl"s contacts to close, thereby energizing K2 (closing its contacts), and operating the garage door motor.
The door opener circuit is designed to facilitate the automatic operation of a garage door while also allowing for manual control. The power source, a 9-V battery, ensures that the system remains operational even during power outages. The momentary-contact switch (52) serves as a user interface, enabling the operator to manually engage or disengage the door opener as needed.
Relay K1, functioning at 9 V, acts as a primary control mechanism within the circuit. When the momentary-contact switch is activated, it energizes K1, closing its contacts. This action allows current to flow to relay K2, which is a latching relay rated for 117 Vac. The latching mechanism of K2 is critical; it remains in its last state (either open or closed) until the next pulse of current is applied. The first pulse energizes the relay, closing its contacts, while the second pulse de-energizes it, opening the contacts.
The LASCR (Light Activated Silicon Controlled Rectifier) plays a pivotal role in the circuit by responding to light signals. When the LASCR is triggered by a light source, it conducts, allowing current to flow through the coil of relay K1. This activation is essential for the operation of the door opener, as it ultimately leads to the energization of K2, which directly controls the garage door motor.
The overall design of this door opener circuit incorporates safety and convenience features, ensuring reliable operation while accommodating both automatic and manual controls. The integration of relays and the LASCR provides a robust solution for garage door automation, enhancing user experience and operational efficiency.The door opener derives its power from a 9-V battery. A momentary-contact switch, 52, is provided in the event that manual opening and closing is required. Relay Kl is a 9-V type and relay K2 is a 117"Vac latching-type, which automatically latches with the first burst of current and opens on the second burst.
The gate lead of the LASCR is not used; a light source triggers the LASCR unit into conduction, causing current to flow in the coil of the relay. That, in turn, causes Kl"s contacts to close, thereby energizing K2 (closing its contacts), and operating the garage door motor.