Current loops use a current source and receiver for electrical signaling, while voltage reporting systems use a current-to-voltage converter. Current loops are suitable for analog and digital communications, compensating for cable performance and external noise, while voltage schemes are better for short distances. Current loops use different levels of current for safe digital signaling, while […]
A trigger circuit synchronizes camera flash and external flash units to produce evenly lit photos. Two types of circuits exist: synchro output and slave. Slave circuits use sensors to trigger flashes. Different settings can be applied to sync outputs for flexibility. Trigger circuits are essential for professional photographers. A trigger circuit is an electronic device […]
Corded circuits were used in telephone exchanges to manually complete calls until computerized switching replaced it. Operators would plug cords into jacks to connect calls and could monitor conversations. Large companies also used private exchanges. The circuit had limitations, including a lack of privacy and the ability to handle only a limited number of calls […]
A feedback loop redirects the output signal back into the input of an electrical circuit, stabilizing and regulating the signal. It can reduce the amount of signal delivered, provide a stable loop, or amplify the signal through an amplifier. The circuit’s design determines the behavior of the feedback loop. A feedback loop is an electrical […]
Circuit testing is a quick and easy way to diagnose electronic device malfunctions. Tools like multimeters and test lights determine if electric current can travel through a circuit, while the In-Circuit Test checks all components on a circuit board. When electronic devices malfunction, there are ways to find the cause of the problem. The circuit […]
Circuit load is the amount of power drawn through an electrical circuit, with maximum loads determined by the wiring and circuit breaker/fuse rating. Different appliances require different loads, and circuit load can be calculated by adding up individual appliance power requirements. Lighting calculations should be based on the highest power consumption expected. Circuit load refers […]
A ring ground is a heavy gauge wire that surrounds a building or structure to provide a common ground for electrical systems. It can also be used as part of a lightning protection system. The standard size wire is 2 gauge copper wire, buried at least 2.5 feet below the ground. It is commonly used […]
Loop circuits connect each phase or line through multiple outlets back to the same fuse or circuit breaker. It originated in the UK after WWII to save copper and labor. It allows for unlimited outlets but has low overcurrent tolerance and difficulty finding faults. A loop circuit is a power distribution wiring method that sees […]
An infinite loop is when a computer program continues executing a command without end, usually due to a lack of end condition, an unreachable end condition, or a retry command. This can cause the computer to slow down or freeze, but modern operating systems can terminate the program. Infinite loops are not the goal of […]
Induction loops use Faraday’s law to detect changes in magnetic fields caused by ferrous metals, such as cars, to activate traffic signals. They are also used to improve hearing aid effectiveness in rooms and taxis. Highly conductive loop wire materials, such as iron and copper, amplify the magnetic field and detect smaller metal masses, such […]
A message loop is a communication process used by computer applications to perform functions. Messages are sent and received to open windows or execute commands. A message queue is needed for some functions, and messages are logged with positive or negative values. The loop is considered complete when all command messages have been processed, and […]
An event loop is a code structure that waits for an event and triggers a response. It can be the central logic of a program and responds to events like keyboard clicks or mouse movements. The loop prepares, polls, monitors, and submits resources to create a response. An event loop, or main loop if that […]
Nested loops are a common and efficient way for programmers to cause sequential events and actions. They are used in various industries to sort or enter large amounts of data. The outer and inner loops are connected and communicate with each other. Different levels of nesting can be used, and the exact looping process varies […]
In-circuit testing ensures proper manufacturing and quality in PCBs. The bed of nails test is the most common method, using connector pins to test for electrical problems. There are pressure and vacuum bed-of-the-nail testers, with vacuum being more efficient but expensive. The test can help find faults, but cannot test PCB contacts or durability. An […]
A phase locked loop (PLL) is a system that adjusts the frequency of an output signal to match the input signal using a variable frequency oscillator and detector. This creates a stable loop and is used in telecommunications and electronic devices to improve reception and efficiency. A phase locked loop (PLL) is a type of […]
A bolo tie is a neck garment made of cord or string with an ornamental clasp, commonly associated with cowboys and Native Americans. It can be made of braided leather, cotton, or western grasses, and the clasp often features silver or stones. The tie is usually worn over a clean button-down shirt and is not […]
Being in the loop means being informed and included in important plans and changes. It requires effort from both oneself and others. Those who are out of the loop may feel left out and miss important information. It is also a self-inflicted excuse for missing deadlines or appointments. People who know they are around have […]
