Clocked busses often need impedance controlled tracking to avoid the posibility of false clock signals caused by an impedance mismatch. As semiconductor devices have become faster and faster they have become much more susceptible to issues caused by signal noise. The problem relates to any type of clocked interface where a device you will transfer […]
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Interfacing To A Mobile Phone Headphone / Mic Connection
Project HiJack – A Great Power And Data Transfer Project http://www.eecs.umich.edu/~prabal/projects/hijack/
Low Pass Filters
A low-pass filter is an electronic filter which passes low-frequency signals but attenuates (reduces the amplitude of) signals with frequencies higher than the cutoff frequency. Put another way a low-pass filter is a circuit offering easy passage to low-frequency signals and difficult passage to high-frequency signals. Simple RC filter This RC filter acts as a […]
Resistance thermometers (RTD’s)
Also called resistance temperature detectors or resistive thermal devices (RTDs). Good for temperature ranges of -200 to +600ºC. Temperature sensors that exploit the predictable change in electrical resistance of some materials with changing temperature. They are usually made of platinum and often called platinum resistance thermometers (PRTs). They are often more suitable than thermocouples in […]
UK Based Electronic Manufacturers
Below are some of the UK based electronic subcontract manufacturing companies we or our clients have used and can recommend. Thinking of having your product manufactured in China, India, or another low labour cost country? This can be a very cost effective route for electronic product manufacture, but you should bear in mind that these […]
Off The Shelf Encolosure Manufacturers
The following companies provide a large range of 'off the shelf' enclosures which can be machined, printed and in many cases also painted to your requirements. Using an off the shelf enclosure for your product design can save substancial moulding design and protoyping costs. When selecting or designing your enclosure you should consider the recycling […]
Offshore Moulding Manufacturers
Below are a list of some of the offshore moulding manufacturers who contact us and look like reasonably sized companies. We can’t offer any specific recommendations but list them here to help people locate a suitable offshore manufacturer: Seal Group Daywell mould Co Ltd SHOUJU Industrial Limited Xiamen(beijing,suzhou)Technology Co.,LTD Suzhou Kaibao Electric Co., Ltd SuNPe […]
SMD Hot Air Rework Stations
Atten 858D SMD If you ever need to do surface mount rework, remove surface mount components, etc, etc, this tool is simply brilliant. The most brilliant thing about it is the price – for around GBP 40.00 you get a tool that used to cost several hundred pounds. Indeed many still do and we're not […]
Example OpAmp Circuits
Voltage Follower Also called a buffer. Only the OpAmp tiny bias current is drawn from the signal source. Voltage follower with output diode drop removal Non Inverting Amplifier Vout = Vin x (1 + (R2/R1)) E.g. R1=10k, R2=10K, Vin=1V, Vout=2V Only the OpAmp tiny bias current is drawn from the signal source. Inverting Amplifier The […]
OpAmps General
The Basics No current flows in or out of the inputs. (Well actually a small bias current does, but its small) Output goes positive if the + input is more positive than the – input. Output goes negative if the + input is more negative than the – input. Output will do whatever is necessary […]