Elektor Circuit: Touch Doorbell with 555
Basic Electronics

Elektor Circuit: Touch Doorbell with 555

Idea: Elektor Lab The great advantage of a touch button or switch is the absence of mechanical parts — what is not in it cannot be broken. Because old-fashioned doorbell push buttons are exposed to wind and weather, they become unreliable over time. So why not replace them with a...

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Educational training and project kit for micro:bit
Basic Electronics

Educational training and project kit for micro:bit

Are you having trouble finding ways to entertain your children at home and motivate them to learn new skills that will be valuable to their future at the same time? Then, meet EDU:BIT! EDU:BIT is an educational toy designed with the purpose of simplifying STEM education and empower...

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FT93xRTC External Power Switch Circuit
Basic Electronics

FT93xRTC External Power Switch Circuit

This application note describes implementing a simple circuit for the FT930/FT931RTC external power supply switch. The Texas Instruments SN74AUC2G53 Single-Pole Double-Throw (SPDT) analog switch is used to select the power supplied by the 1.5V battery or by the 1.2V internal LDO. You...

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Simple fixture determines leakage of capacitors and semiconductor switches
Basic Electronics

Simple fixture determines leakage of capacitors and semiconductor switches

The circuit in Figure 1a comprises a voltage follower, IC1 , and the reference-voltage source of IC2. IC1 is an Analog Devices AD8661 op amp, which has a guaranteed input-bias current of no more than 1 pA and a typical input-bias current of 0.3 pA (Reference 1), and IC2 is an Analog...

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Power-handling capabilities of inductors
Basic Electronics

Power-handling capabilities of inductors

App note from Coilcraft on how to calculate the power dissipation of an inductor. Inductors are not typically rated by power, however an approximation of the power-handling capability of an air core or ceramic core chip inductor can be estimated using the data sheet specifications for...

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App note: Designing RC snubbers
Basic Electronics

App note: Designing RC snubbers

RLC snubber circuits, app note from Nexperia. This document describes the design of a simple “RC snubber circuit”. The snubber is used to suppress high-frequency oscillations associated with reverse recovery effects in power semiconductor applications App note: Designing RC...

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Free Elektor Circuit: Cable & Conduit Locator
Basic Electronics

Free Elektor Circuit: Cable & Conduit Locator

Apart from the risk of a (dangerous) electric shock and the near certainty of a very massive short circuit that is the consequence of drilling into a cable, the aftermath of this mishap is no fun either. In any case, the damaged cable has to be replaced – and that is already not nice...

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Fundamentals of MOSFET and IGBT Gate Driver Circuits
Basic Electronics

Fundamentals of MOSFET and IGBT Gate Driver Circuits

The main purpose of this application report is to demonstrate a systematic approach to design high-performance gate drive circuits for high-speed switching applications. It is an informative collection of topics offering a “one-stop-shopping” to solve the most common design...

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