Збирач потоків

I am stumped by this potentiometer manufacturer. Internet searches reveal no information. This dual concentric stack has a manufacturers label on the back C.C.M. & Co. Ltd. There is a type CG. indicated. The middle wiper is switchable. The two two pots are 50K and 500K. submitted by /u/fanintheflats [link] [comments]

submitted by /u/AutoModerator
[link] [comments]

submitted by /u/gaspar_segura [link] [comments]

Automated test solutions provider Teradyne Inc of North Reading, MA, USA has partnered with photonics assembly & test equipment provider ficonTEC Service GmbH of Achim, Germany to announce the availability of what is said to be the first high-volume, double-sided wafer probe test cell for silicon photonics. The solution is designed to meet the growing demand for high-throughput electro-optical testing of silicon photonic wafers driven by co-packaged optics (CPO) applications...

There’s been a lot of interesting conversation and DI teamwork lately devising circuits for ON/OFF power control using inexpensive momentary-contact switches (See “Related Content” below). 

Wow the engineering world with your unique design: Design Ideas Submission Guide

Most of these designs have incorporated edge triggered flip/flops (e.g. the CD4013) but of course other possibilities exist. Figure 1 shows one of them.

Figure 1 Flip/flop-free debounced push ON push OFF toggling with power-on reset and low parts count.

Okay, I can (almost) hear your objection. It isn’t (technically) accurate to describe Figure 1 as flip/flop free because the two inverters, U1a and U1b, are connected as a bistable latch. That is to say, a flip/flop. It’s really how its state gets toggled by S1 that’s different. Here’s how that works.

While sitting in either ON or OFF with S1 un-pushed, U1a, being an inverter, charges C2 to the opposite state through R1. So, when S1 gets mashed, C2 yanks U1a’s input, thereby toggling the latch. The R1C2 time-constant of 100 ms is long enough to guarantee that if S1 bounces on make, as it most assuredly will, C2’s complementary charge will ride out the turbulence. 

Then, because R2 < R1, the positive feedback through R2 will overpower R1 and keep the same polarity charge on C2 for as long as S1 is held closed. This ensures that later, when S1 is released, if it bounces on break (as some switches are rumored to be evil enough to do), the new latch state won’t be lost. PFET Q1 now transfers power to the load (or doesn’t). Thus, can we confidently expect reliable flipping and flopping and ONing and OFFing. 

So, what’s the purpose of C1? Figure 2 explains.

Figure 2 Power up turn off where the rising edge of V+ at PFET a’s source with its gate held low by RCs turns it on.

If V+ has been at zero for awhile (because the battery was taken out or the wall wart unplugged), C1 and C2 will have discharged likewise to zero (or thereabouts). So, when V+ is restored, they will hold the inverter’s FET gates at ground. This will make the PFET’s gate negative relative to its (rising) source, turning it on, pulling its output high, and resetting the latch to OFF.

So why R3?

When the latch sits for a while with S1 unpushed, whether ON or OFF, C1 will charge to V+. Then, when S1 is depressed (note this doesn’t necessarily mean it’s unhappy), C1 will be “quickly” discharged. Without R3, “quickly” might be too much of a good thing and involve a high enough instantaneous current through S1, and hence enough energy deposited on its contacts, to shorten its service life.

Thus, making us both unhappy!

Here’s a final thought about parts count. The 4069 is a hextuple part, this makes Figure 1’s use of only two of its six inverters look wasteful. We can hope the designer can find a place for the unused elements elsewhere in their application, but what if she can’t?

Then it might turn out that Figure 3 will work.

Figure 3 Do something useful with the other 2/3rds of U1, eliminate Q1 for loads of less than 10 mA, and gain short-circuit protection for free.

Ron for the 4069 is V+ dependent but can range as low as 200 Ω (typical) at V+ > 10 V. Therefore, if we connect all five of the available inverters in parallel as shown in Figure 3, we’d get a net Ron of 200/5 = 40 Ω from V+ to Vout. This might be adequate for a low power application, making Q1 redundant. As an added benefit, an accidental short to ground will promptly and automatically turn the latch and the shorted load OFF. U1 will therefore be that much less likely to catch fire, and us to be unhappy! Note it also works if the latch is OFF and the output gets shorted to V+.

Stephen Woodward’s relationship with EDN’s DI column goes back quite a long way. Over 100 submissions have been accepted since his first contribution back in 1974.

Related Content

• To press on or hold off? This does both.
• Flip ON flop OFF
• Latching D-type CMOS power switch: A “Flip ON Flop OFF” alternative
• To press ON or hold OFF? This does both for AC voltages

The post Flip ON flop OFF without a flip/flop appeared first on EDN.

At the IEEE International Reliability Physics Symposium (IRPS 2025) in Monterey, CA, USA (30 March–3 April), nanoelectronics research center imec of Leuven, Belgium demonstrated that, despite their positive bias (on-state) instability, gallium nitride (GaN) MISHEMTs (metal-insulator-semiconductor high-electron-mobility transistors) maintain consistent performance when operating within a well-defined range. These findings support the design of reliable GaN-based power amplifiers to avoid positive bias instability and thus enable handset applications for 6G communication...

Ascent Solar Technologies Inc of Thornton, CO, USA – which makes lightweight, flexible copper indium gallium diselenide (CIGS) thin-film photovoltaic (PV) modules that can be integrated into consumer products, off-grid applications and aerospace applications – has received an order to revise the design of its space solar products after being evaluated by a potential customer interested in technologies capable of receiving beamed power...

Gallium nitride (GaN) power IC and silicon carbide (SiC) technology firm Navitas Semiconductor Corp of Torrance, CA, USA says that its GaNSense power ICs will power the latest 2.5kW ultra-high power density DC–DC converter for AI data centers of China-based Greatwall Power Technology Co Ltd...

Gallium nitride (GaN) power IC and silicon carbide (SiC) technology firm Navitas Semiconductor Corp of Torrance, CA, USA says that its GaNSense power ICs will power the latest 2.5kW ultra-high power density DC–DC converter for AI data centers of China-based Greatwall Power Technology Co Ltd...

SemiQ Inc of Lake Forest, CA, USA — which designs, develops and manufactures silicon carbide (SiC) power semiconductors and 150mm SiC epitaxial wafers for high-voltage applications — has begun shipping its SiC MOSFET modules for integration into cell cycling systems used by several of the world’s leading battery manufacturers...

SemiQ Inc of Lake Forest, CA, USA — which designs, develops and manufactures silicon carbide (SiC) power semiconductors and 150mm SiC epitaxial wafers for high-voltage applications — has begun shipping its SiC MOSFET modules for integration into cell cycling systems used by several of the world’s leading battery manufacturers...

To support its growth plan, specialty semiconductor and performance materials producer 5N Plus Inc (5N+) of Montreal, Québec, Canada has renewed its senior secured multi-currency revolving syndicated credit facilities, expanding its borrowing capacity from $124m to $154m. Subject to lenders’ approval, the firm can opt to further increase its credit facilities to $204m through a $50m accordion feature...

To support its growth plan, specialty semiconductor and performance materials producer 5N Plus Inc (5N+) of Montreal, Québec, Canada has renewed its senior secured multi-currency revolving syndicated credit facilities, expanding its borrowing capacity from $124m to $154m. Subject to lenders’ approval, the firm can opt to further increase its credit facilities to $204m through a $50m accordion feature...

submitted by /u/Mas0n8or [link] [comments]

At the Optical Fiber Communication Conference and Exhibition (OFC 2025) in San Francisco (1-3 April), Keysight Technologies Inc of Santa Rosa, CA, USA, Japan-based NTT Innovative Devices Corp, and Lumentum Holdings Inc of San Jose, CA, USA (which designs and makes optical and photonic products for optical networks and lasers for industrial and consumer markets) have given joint demonstration of 448Gbps data transmission using 224GBaud PAM4 optical technology...

Fractal Antenna Systems has introduced Acoustic Resonance Mitigation (ARM), a technology that disables drones using directed acoustic energy. ARM emits sonic, ultrasonic, and subsonic waves to induce vibrations or Prandtl boundary layer instability, leading to flight failure. Propeller blades are especially vulnerable, as turbulence or vibrations can disrupt a drone’s inertial measurement unit (IMU).

Portions of an ARM button array (non-parametric) for a DRONE BLASTR airborne drone.

ARM technology, co-invented by Fractel CEO Nathan Cohen, is backed by U.S. patents and licensed to Fractal. The technology has been demonstrated by foreign groups, though U.S. patents predate these efforts, according to Cohen. Cost-effective and portable, ARM is specifically designed to disable drones, from microdrones to pizza box-sized devices.

In military applications, ARM can be deployed on attack drones to disable adversarial swarms. Known as the DRONE BLASTR, this patent-pending in situ device offers a new method for countering drone swarms. Beyond the battlefield, ARM offers a countermeasure against drones used in illegal surveillance and smuggling.

A timeline for commercialization was not available at the time of this announcement. Government, public safety agencies, and related enterprises can contact Fractal for more information.

Fractal Antenna Systems 

Find more datasheets on products like this one at Datasheets.com, searchable by category, part #, description, manufacturer, and more.

The post Fractal Unveils Acoustic Tech to Disable Drones appeared first on EDN.

Keysight and Coherent showcased 200G-per-lane VCSEL technology at OFC 2025, demonstrating characterization, tuning, and validation. The multimode VCSEL enables higher data transfer rates to meet growing data center bandwidth demands.

Keysight’s M8199B 256-Gsample/s AWG

The 200G multimode VCSEL enhances data transfer and network efficiency by doubling data throughput to 200 Gbps per lane, surpassing current multimode interconnects. It offers significant power savings per bit compared to single-mode alternatives, and its lower manufacturing costs make it a more economical choice for short-reach data links. Well-suited for AI pods and clusters, this VCSEL supports the high-speed, short-reach interconnects essential for GPU-driven data sharing.

The setup used at OFC featured Keysight’s DCA-M wideband multimode sampling oscilloscope, M8199B 256-Gsample/s arbitrary waveform generator (AWG), and Coherent’s 200G VCSEL. The AWG drives a 106.25-GBaud PAM4 signal into the VCSEL, with the optical output measured on the oscilloscope to display the eye diagram. This demonstrates the VCSEL’s feasibility and Keysight’s characterization and validation capabilities.

Keysight Technologies 

Coherent

Find more datasheets on products like this one at Datasheets.com, searchable by category, part #, description, manufacturer, and more.

The post Partners demo 200G multimode VCSEL appeared first on EDN.

Vishay’s VEML6046X00 RGB IR sensor is AEC-Q100 qualified for use in vehicle displays and interior lighting. This compact device integrates a photodiode, low-noise amplifier, and 16-bit ADC in an opaque surface-mount package that is just 2.67×2.45×0.6 mm.

With three color channels and one infrared channel, the VEML6046X00 calculates color temperature to enable white point balancing for displays. Its green channel’s spectral sensitivity aligns with the human eye for accurate measurements, while the IR channel stabilizes output across various light sources.

The sensor performs consistently in daylight with an ambient light range of 0 to 176 klx, preventing saturation. A digital resolution of 0.0053 lx/count allows the VEML6046X00 to operate behind dark cover glass. It supports a supply range of 2.5 V to 3.6 V, an I2C bus voltage range of 1.7 V to 3.6 V, and an ambient temperature range of -40°C to +110°C. Typical shutdown current consumption is 0.5 µA.

The sensor is well-suited for automotive display backlight control, infotainment systems, rear-view mirror dimming, and heads-up displays.

Samples and production quantities of the VEML6046X00 RGB IR sensor are available now, with a lead time of 16 weeks.

VEML6046X00 product page

Vishay Intertechnology 

Find more datasheets on products like this one at Datasheets.com, searchable by category, part #, description, manufacturer, and more.

The post IR color sensor enhances automotive displays appeared first on EDN.

ST’s four-channel high-side switches, the IPS4140HQ and IPS4140HQ-1, drive resistive, capacitive, and inductive loads with one side connected to ground. The IPS4140HQ handles up to 0.6 A per channel, while the IPS4140HQ-1 supports up to 1.0 A. Both have a maximum RDS(on) of 80 mΩ per channel and include extensive diagnostic and protection features.

Housed in compact 8×6-mm QFN48 packages, the devices operate from a 10.5-V to 36-V supply and tolerate up to 41 V for enhanced system safety and reliability. Applications include programmable logic controllers, industrial PC I/O ports, and numerical control machines.

These intelligent power switches provide per-channel short-circuit protection, temperature monitoring, and independent restart to boost fault tolerance and simplify automated recovery. Additional safeguards include case-overtemperature shutdown with sequential restart, output current limiting, undervoltage lockout, and input overvoltage protection. With 5-V/3.3-V logic compatibility, EAS ratings up to 2.5 J per channel, and compliance with IEC 61000-4 and IEC 61131-2 standards, they ensure robust performance in industrial applications.

Prices for the IPS4140HQ and IPS4140HQ-1 high-side switches start at $2.59 in lots of 1000 units.

STMicroelectronics

Find more datasheets on products like this one at Datasheets.com, searchable by category, part #, description, manufacturer, and more.

The post Intelligent high-side switches manage diverse loads appeared first on EDN.