circuitry

Found 7 Results for circuitry.

Showing 1 to 7.

1. Smoke Detectors
The test button on photoelectric devices checks all the circuitry but that's not the case for ionization devices. The button on these models tests the alarm circuit only.
http://www.fun-home-projects.com/home_ownership/​safety_and_special_interest/​smoke_detectors.html

2. Solid - State Devices
There are many other small electronic components which can be used in the control circuitry of appliances and tools.
http://www.fun-home-projects.com/electrical_projects/​tools/​solid_state_devices.html

3. Continuity Checkers
Most appliance problems of an electrical nature are the result of open or shorted circuitry within the appliance. The easiest way to test for these faults is with a continuity checker.
http://www.fun-home-projects.com/electrical_projects/​tools/​continuity_checkers.html

4. The Volt - Ohm - Milliammeter
By gradually working your way through the circuitry you can easily locate the defective component or connection. The ohmmeter circuitry of the VOM is nothing more than a simple milliammeter circuit with a variable (zero control) resistor (Rz) and test-lead connecting points (X and Y) to introduce a resistor of unknown value into the circuit.
http://www.fun-home-projects.com/electrical_projects/​tools/​the_volt_ohm_milliammeter.html

5. Bench - Type Continuity Checker
The reader should bear in mind, however, that it is not suitable for checking transistor circuitry. The continuity tester can be used for checking the operation of wall-mounted furnace thermostats whose contacts can become pitted or contaminated.
http://www.fun-home-projects.com/electrical_projects/​tools/​bench_type_continuity_checker.html

6. Ground Checker
Consider the circuitry of a ground checker that can be assembled in a small minibox. It consists of a small 120V lamp, a DPST toggle switch, a three-hole 115V receptacle (Jl), a Fahnstock clip or binding post (J2), and a two-wire power cable equipped with a standard two-prong plug (P).
http://www.fun-home-projects.com/electrical_projects/​tools/​ground_checker.html

7. Go / No - Go Battery Checker
Often voltmeter circuitry is inadequate to render an accurate reading. But to avoid throwing away still useful batteries, try constructing this handy go/no-go battery checker.
http://www.fun-home-projects.com/electrical_projects/​tools/​go_no_go_battery_checker.html

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