If you´re searching for a rocker switch with small dimensions and a great design, then you shouldn´t overlook the Marquardt 1858.
Marquardt 1858 is a miniature 2-pole switch with 10A/250VAC rating, made of immediately self-extinguishing material (UL-94V0). Inspite of small dimensions it handles up to 100A inrush (capacitive) currents. Silver plated terminals provide a low resistance and a safe plugging of connectors (fastons) is ensured by double fixing of terminals in the switch housing. Ambient temperature on the terminals side can be up to 100°C, what enables to use the switch even in pent conditions of power applications. For an increased dust and water protection you can use the 203.089.011 transparent cover. The switch surface is silky matt with an abrasion-proof marking.
Small dimensions and an elegant design make the Marquardt 1858 switch suitable for applications like for example a main power switch of various devices, as well as for a control of peripherials. In the 1858 series there are available switches in various versions, in stock we keep 1858.1103 type. Detailed information will provide you the Marquardt 1858 datasheet as well as Marquardt switches overview.
Elegant, miniature, powerful – Marquardt 1858 double switch - [Link]
MCP9501/2/3/4 family of devices are temperature switches with ±1°C (typical) accurate factory set output thresholds. These devices are ideal for high power supply systems where an overtemperature protection circuit is needed. These devices do not require external components, consume 25 μA (typical), and the factory set thresholds provide simplicity.
MCP9501 – Temperature Switch with Selectable Hysteresis - [Link]
These chrome-plated metal buttons are rugged and waterproof and look real good while doing it! Simply drill a 16mm hole into any material up to 1/2″ thick and you can fit these in place, there’s even a rubber gasket to keep any water out of the enclosure. On the front of the button is a flat metal actuator, surrounded by a green plastic LED ring. On the back there are 3 contacts for the button (common, normally-open and normally-closed) and 2 for the blue LED ring (+ and -). Connect 3 to 6V to the LED to have it light up nicely, there’s a built in resistor! If you want to use this with a higher voltage, say 12V or 24V, simply add a 470 ohm resistor in series with the LED connection to keep the LED current at around 20mA.
Waterproof Metal On/Off Switch with Green LED Ring - [Link]
Light Switch XBee: Example Project by Rob Faludi. [via]
Just finished documenting the latest example project. The Light Switch XBee is a wireless wall switch that can control lamps, fans, motors or your homemade robot using Digi’s XBee radio. It’s a model for almost any digital input device you’d like to build. If it goes on and off, you can make it wireless using this example as your guide!
Light Switch XBee: Example Project - [Link]
This week I’m presenting a project easy to build and it might be in interest of automobile enthusiasts.
Certain vehicles, like Mercedes, BMWs and others, have a system that turns the cabin light off a few seconds after the doors are locked and with a fade-out effect .
This project does that.
The soul of the circuit is a 12F615 microcontroller. Pins 2 and 3 will be connected to jumpers that, either connected to 5V or 0V change the behavior of the circuit.
On/Off switch with fade effect - [Link]
Most of microcontrollers work within 5 volt environment and the I/O port can only handle current up to 20mA; therefore if we want to attach the microcontroller’s I/O port to different voltage level circuit or to drive devices with more than 20mA; we need to use the interface circuit. One of the popular method is to use the Bipolar Junction Transistor (BJT) or we just called it transistor in this tutorial. I have to make clear on this BJT type to differentiate among the other types of transistors family such as FET (Field Effect Transistor), MOSFET (Metal Oxide Semiconductor FET), VMOS (Vertical MOSFET) and UJT (Uni-Junction Transistor).
Using Transistor as a Switch – [Link]
This is a high power switch which can be used to switch almost anything. It is designed to enable / shorting large capacitor banks for maximum energy transfer. Applications: Can Crusher, Disc Launcher, Rail Gun, etc.
High power pneumatic switch – [Link]
Mariano Alvira writes:
I drive a 1998 Jeep Wrangler and recently it was stolen. As it turns out, a Wangler is embarrassingly easy to steal. The thief used a screwdriver to forced the door lock and break out the ignition; without an ignition you can start the car with your finger.
Seeing how easy is was for someone to steal my car annoyed me quite a bit, so I looked into the best ways to protect your vehicle. In addition to an ignition (which on a Wrangler should be modified to make it harder to remove), it seems that a brake/steering wheel lock and a engine “kill switch” with a good hood lock seems to do the job; at least, it should provide enough motivation to move on to the next Jeep Wrangler that’s parked 100 feet away.
Building a Open Source / Open Hardware wireless kill switch for your car – [Link]
Switch is the ultimate modular pocketknife, with 17 different attachments so you can mix and match your most frequently used tools. Customize your Switch’s width by swapping out the inner axles, or group your tools into different “themes” – home, office, outdoors, etc. However you choose to do it, Switch is your tool, your way.
User-configured multitool – [Link]