Here’s a project that could be useful this summer on the beach, to stop anyone touching your things left on your beach towel while you’ve gone swimming; you might equally well use it at the... Read more
There are many circuits for low voltage regulators. For higher voltages, such as supplies for valve circuits, the situation is different. That’s why we decided to design this simple regulato... Read more
The LR12 made by Supertex Inc. is a good choice for applications where a supply voltage of more than 35 to 40 V needs to be stabilised. This small regulator can cope with input voltages of u... Read more
A Maxim MAX6710 IC (http://pdfserv.maxim-ic.com/arpdf/ MAX6710.pdf) can be used to monitor four supply voltages. If any monitored voltage drops below the threshold voltage set by the manufac... Read more
The ring oscillator comprises a number of inverting transistor amplifier stages connected in series, in which the output of the final stage is connected to the input of the first stage. You... Read more
Occasionally you come across some unusual situations when setting up measurement systems. The author once had to set up a system to register the vibrations and strain supposed to be present... Read more
This high voltage generator was designed with the aim of testing the electrical breakdown protection used on the railways. These protection measures are used to ensure that any external meta... Read more
The circuit shows one way of obtaining a voltage of 90 V from a 1.5 V battery supply. The LT1073 switching regulator from Linear Technology (www.linear-tech.com) operates in boost mode and c... Read more
The board may be used in as AVU shown in Fig. 1 or as in Fig. 2 ‘with a transformer rated from 1.5 VA to 12 VA. When used with a very small transformer, it is possible to cut off the part ma... Read more
The Type Y1112 fluoractorTM form Taxes instruments a specially designed thyristor for starting fluorescent tubes. Its main advantages over a standard thyristor are its much greater hold curr... Read more
