More about time (745)

1-12-1991 | Switching transistors are usually driven into saturation. which has an adverse effeet on the switching speed. This effect is eliminated,o...

1-12-1991 | A type 555 timer and some passive components can provide a small converter to provide a negative output of 12 V at a few milliamperes.

1-12-1991 | The overload indicator consists of a window comparator that measures the magnitude of an a.f. signal. Two of the opamps contained in an T...

1-12-1991 | Siemens' Type SLB0586A IC enables the simple construction of a dimmer with touch control. Used in conjunction with a Type TIC2060 triac,...

1-11-1991 | To achieve a comfortable room temperature quickly it is often required to switch on the central heating (CH) boller tor ten minutes or...

1-09-1991 | As discussed last month, the timecode interface is an ingenious piece of electronics capable of putting time codes on a magnetic tape a...

1-07-1991 | Noticing that the projector is running out of step with the audio programme is pretty embarrassing when your friends and relatives have...

1-07-1991 | Siemens Type 5AB0529 IC may be programmed for periods from 1 second to 31 hours 30 minutes. lt may be used for switching staircase lights...

1-07-1991 | National Semiconductor's LM334Z is a temperaturedependent adjustable current source supplied in a plastic TO92 package. A 226 Ω resistor...

1-07-1991 | This electronic switch is designed to be connected direct to the mains, which obviates a low-voltage supply and so keeps the cost and sp...