More about switch (472)

1-06-1998 | The circuit presented in this article enables you to build a software-controlled 8-channel analogue switching unit that will be hard to be...

1-12-1997 | This inexpensive VHF preamplifier uses the BF324 1092 style pnp transistor in a grounded-base configuration. The circuit may be used as a...

1-12-1997 | In the testing of circuits, there is sometimes a need for the supply voltage to be switched on at a gjven time or in steps.

1-11-1997 | The measurement and control of the moisture content of gases, such as the atmosphere around us, is an integral part of many industries,...

1-10-1997 | Although a PC can be equipped with four RS232 serial ports, only two of these are available on most machines. Worse, most laptops have ju...

1-10-1997 | This article describes a lights switch which is operated by moving your hand in front of it. This is achieved by detecting infrared lig...

1-07-1997 | If you are after a small, reliable and inexpensive switch-mode power supply, National Semiconductor's LM257x series of switch-mode power...

1-07-1997 | The delay is intended to switch on the mains to heavy loads gradually to ensure that the switch-on current remains within certain Iimits...

1-07-1997 | The 20-bit ADC in the December 1996 issue of this magazine was fitted with symmetrical Inputs (as is usual in a professional appliance)....

1-07-1997 | When it comes to input selection in a preamplifier, the use of a relay is always better than a simple rotary switch - at least from a qua...