Auto Power Off

We are surrounded by battery operated equipment of all kinds, and this array is growing still. Manufacturers and designers lean over backwards to make sure that their equipment draws a small current and can thus be operated by a battery. This has its flip side, too. because even if the equipment in question draws only […]

Power Buzzer

How often on average do you have to call members of your family each day to tell them that dinner is ready, it’s time to leave, and the like? The person you want is usually in a different room, such as the hobby room or bedroom. A powerful buzzer in the room, combined with a […]

Loudspeaker Protector Monitors Current

This circuit uses a 0.1O 1W resistor connected in series with the output of a power amplifier. When the amplifier is delivering 100W into an 😯 load, the resistor will be dissipating 1.25W. The resulting temperature rise is sensed by a thermistor which is thermally bonded to the resistor. The thermistor is connected in series […]

Mains Pulser

The pulser is intended to switch the mains voltage on and off at intervals between just under a second and up to 10 minutes. This is useful, for instance, when a mains-operated equipment is to be tested for long periods, or for periodic switching of machinery. Transformer Tr1, the bridge rectifier , and regulator IC1 […]

HV2405E transformerless stabilizer

Using HV2405E chip, manufactured by Harris, along with a few external components connected like in this circuit diagram can be achieved a voltage stabilizer without a voltage transformer. Using HV2405E chip can get a 5 + 24V stabilized voltage directly from the mains AC 100 260V.Peak output current of stabilizer is 50 mA. Integrated circuit […]

Power over Ethernet IC for Surveillance Systems

Power over Ethernet IC for Surveillance Systems Silicon Laboratories Inc., a leader in high-performance, analog-intensive, mixed-signal ICs, today introduced a single-port Power over Ethernet (PoE) controller that brings economical “plug-and-play” simplicity to embedded power sourcing equipment (PSE) designs. The new Si3462 controller eases the development of PSE endpoints such as residential gateways, set-top boxes, fiber-optic […]

Power Line Communications IC

Power Line Communications IC The ADE8157 is a complete digital baseband processor IC that includes a physical layer (PHY), data link layer (DLL), and networking layer (NL). The ADE8157 includes a high performance receive path analog-to-digital converter (ADC) to reduce the external component count. An on-chip digital modulator creates the transmit signal for an external […]

Power MOSFETs for 1.2V Applications

Power MOSFETs for 1.2V Applications Vishay Intertechnology, Inc. introduced the industry’s first p-channel power MOSFET in the industry’s smallest 0.8 mm by 0.8 mm chipscale package, in addition to the first n- and p-channel devices to offer on-resistance ratings down to 1.2 V in this package size. The 8 V n-channel Si8802DB and p-channel Si8805EDB […]

Capacitive Coupling Wireless Power

Capacitive Coupling Wireless Power Murata Manufacturing Co., Ltd. has begun production of the LXWS series capacitive coupling wireless power transmission module that enables wireless recharging of tablet PCs and other mobile devices. This module provides wireless power transmission of 10 W through use of the power-sending and power-receiving set. Market launch of the module that […]

Nano Power Energy Harvesting

Nano Power Energy Harvesting Texas Instruments Incorporated introduced its next generation of power management integrated circuits (ICs) for energy harvesting. The highly efficient boost charger for nano (ultra low) power energy harvesting manages the microwatts to milliwatts of power generated from a number of sources, such as solar, thermoelectric, electromagnetic and vibration, and stores the […]