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Automotive relay for PCB used by leading car companies was introduced to you in a recent article. Moreover, now you can buy this relay for a substantially lower price.
Relay V23084-C2001-A303, marked also as 1393267-2 is a well-proven 12V miniature double relay with changeover contacts, which can be used for servicing as well as for new applications. During past months we registered your stable interest about this type of relay, that´s why we tried to negotiate even better purchase conditions.
Advantages / Features:
- enclosed double mini PCB relay with CO contacts
- contacts from silver and nickel
- continuous current 20/20A
- easy PCB routing thanks to an optimized terminals layout
- convenient price
- specified temperature range -40 to +85°C
- coil 12V/ 255 Ohms
- dimensions 17.5×16.8×13.2 mm (LxWxH)
We managed it and we want to pass this benefit to you. This enables us to offer the relay to you for a considerably lower price than so far. Detailed information will provide you our article “Automotive relay for PCB used by leading world producers” as well as the V23084-C2001-A303 datasheet. A lower price is valid till actual stock sell-out.
Automotive relay for the price like never before - [Link]
SolarCharge 200ds230 rev 2 - An unconventional, scalable high efficiency 12V solar power system, a battery charge controller with low voltage cutout to protect the battery. [via]
An unconventional, scalable high efficiency 12V solar power system and battery charge controller with low voltage cutout to protect the battery. (ideal for systems of 50W or less).
The most common solar charger consists of a Schottky diode to prevent the battery from draining into the PV panel and a shunt regulator that effectively short circuits the panel once the battery is fully charged.
One problem with this approach is diode losses and the resulting heat. If a 50W 12V panel supplies 4A to the battery, the Schottky diode will drop about 0,4V across it dissipating about 1,6W of heat. This requires a heat sink and loses power to heat. The problem is that there is no way of reducing the volt drop, paralleling diodes may share current, but the 0,4V will still be there. The circuit uses a MOSFET in stead of the usual diode and the primary power loss is resistive.
Scalable 12V solar power system and battery charge controller - [Link]
dangerousprototypes.com writes:
Ever wonder how some designs group all the power supply pins in one corner of the schematic? They look organized, and it’s easier to understand how the circuit works because pins are grouped by function. In this tutorial we’ll show you how to make an Eagle part with separate power pins. This can be extended to group pins by function as well.
Create parts with separate power pins - [Link]
Convert square wave clock signals to low distortion sinewaves – [via]
This circuit derives a pure sinewave from a crystal-controlled clock source by using a ring counter to remove the highest-amplitude unwanted harmonics, and filtering the result with an 8th-order lowpass, switched-capacitor elliptic filter
Low-cost, low-distortion square to sinewave signal converter - [Link]
The basics of SMPS design, written by the late analog guru Jim Williams – [via]
A problem is that while everyone agrees that working switching regulators are a good thing, everyone also agrees that they are difficult to get working. Switching regulators, with their high efficiency and small size, are increasingly desirable as overall package sizes shrink. Unfortunately, switching regulators are also one of the most difficult linear circuits to design.
Switching regulators for poets - [Link]
If you are someone who enjoys doing your own home improvement and you are working with electronics during the process, having access to a multimeter is an absolute must. There are going to be instances where you will need to be able to measure voltage, ohms and continuity and without an electronic multimeter, it will be difficult to determine just what you need to do. Here are a few tips for using your multimeter to perform home improvement projects.
- Understand your options – Multimeters are available in different types. These can run from the most basic to the most luxuries, which is also the most expensive. Unless you have highly advanced electronic skills and knowledge, a basic multimeter is going to be just fine and will have fewer features that you need to figure out.
- Familiarize yourself with your multimeter – Take some time to examine the multimeter before you use it. When looking at the face of the design you should see three different things – dial, settings and lead ports. These should be color coded which makes it much easier to avoid mistakes when plugging in leads.
- Learn the dial settings – As you look at the dial, take notice of the symbols and numbers that surround it. You should see an arrow that points to the right with a plus sign beside it. This is the setting that is used for continuity. The “V” setting is used for voltage and the setting for ohms or resistance will look like a “0” with feet.
- Learn the uses of your multimeter – You can test a random electrical outlet to make sure that the multimeter is working properly. Use the “V” setting for this. Check to ensure that power is not flowing through any electronic circuits that you are testing. If you would like to test for a blown fuse, remove the fuse from the clamps and set the meter for continuity testing. Simply touch each end of the fuse with the meter’s probe and if the fuse is operating properly you should hear a beep.
- Test for amperage – When testing for amperage you have to be a bit more careful. This is a more complicated process and requires that you use more than just two probes. You can use a clamp add-on for amperage testing by plugging it into two ports that read “A” and “Com.” Clamp the tester onto the hot wire that you want to test or you can simply purchase a plug that includes a wire loop specifically designed to test amperage.
This article was written by Electric Point, one of the largest independent wholesale groups in the UK and Ireland. Visit us today at electricpoint.com
Rectifier circuit with very low voltage drop featuring a P-channel MOSFET - [via]
Different ways you can protect your circuit from backwards power connections. Diodes, schottky diodes and P channel MOSFETs.
P-FET Reverse voltage polarity protection tutorial - [Link]
dangerousprototypes.com writes:
Most chips have multiple power pins that need to be connected to the same power supply, but Eagle doesn’t allow you to give 2 different pins the same name. This short tutorial shows how to get around this and name multiple part pins the same thing.
Create Eagle parts with pins that have the same name - [Link]
