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2. Solid-state relay - Wikipedia

   en.wikipedia.org/wiki/Solid-state_relay

   A solid state relay (SSR) is an electronic switching device that switches on or off when an external voltage (AC or DC) is applied across its control terminals. They serve the same function as an electromechanical relay, but solid-state electronics contain no moving parts and have a longer operational lifetime.

3. Blocking oscillator - Wikipedia

   en.wikipedia.org/wiki/Blocking_oscillator

   US Patent 2211852, [3] filed in 1937, "Blocking oscillator apparatus". (based around a vacuum tube). US Patent 2745012, [4] filed in 1951, "Transistor blocking oscillators". US Patent 2780767, [5] filed in 1955, "Circuit arrangement for converting a low voltage into a high direct voltage". US Patent 2881380, [6] filed in 1956, "Voltage converter".

4. ANSI device numbers - Wikipedia

   en.wikipedia.org/wiki/ANSI_device_numbers

   68 - Blocking Relay / Power Swing Blocking; 69 - Permissive Control Device; 70 - Rheostat; 71 - Liquid Switch, Level Switch; 72 - DC Circuit Breaker; 73 - Load-Resistor Contactor; 74 - Alarm Relay; 75 - Position Changing Mechanism; 76 - DC Overcurrent Relay; 77 - Telemetering Device, Speed Sensor; 78 - Phase Angle Measuring or Out-of-Step ...

5. Proportional–integral–derivative controller - Wikipedia

   en.wikipedia.org/wiki/Proportional–integral...

   For example, a temperature-controlled circulating bath has two PID controllers in cascade, each with its own thermocouple temperature sensor. The outer controller controls the temperature of the water using a thermocouple located far from the heater, where it accurately reads the temperature of the bulk of the water.

6. Glossary of electrical and electronics engineering - Wikipedia

   en.wikipedia.org/wiki/Glossary_of_electrical_and...

   avalanche diode A diode intended for regular operation in the reverse, avalanche breakdown, mode. Used as a voltage reference, noise source, and in certain classes of microwave oscillator device. average rectified value The average value of an alternating current waveform, taking the absolute value of the waveform. The average value is ...

7. Schottky diode - Wikipedia

   en.wikipedia.org/wiki/Schottky_diode

   While standard silicon diodes have a forward voltage drop of about 0.7 V and germanium diodes 0.3 V, Schottky diodes' voltage drop at forward biases of around 1 mA is in the range of 0.15 V to 0.46 V (see the 1N5817 [6] and 1N5711 [7]), which makes them useful in voltage clamping applications and prevention of transistor saturation.

8. 1N400x rectifier diode - Wikipedia

   en.wikipedia.org/wiki/1N400x_rectifier_diode

   1N4001 diode in DO-41 axial package (through hole mount) A schematic symbol for general-purpose silicon rectifier diodes Current-voltage characteristics of a 1N4001 at different temperatures The 1N400x (or 1N4001 or 1N4000 [ 1 ] ) series is a family of popular one- ampere general-purpose silicon rectifier diodes commonly used in AC adapters for ...

9. Tankless water heating - Wikipedia

   en.wikipedia.org/wiki/Tankless_water_heating

   Mobile water heater in a train car (Russia) Tankless water heaters provide many advantages: [8] Long term energy savings: Though a tankless water heater typically costs more initially, it usually costs less to operate because of lower energy use—since it only heats water when required instead of continuously maintaining a tank of heated water ...