More about time (745)

1-01-1993 | If only poor King Alfred had used a cooking timer, he might not have burnt his cakes in the oven! Unfortunately, with today's Three-Jobs-At...

1-01-1993 | Virtually all modern cars have a built-in alarm to warn if you have left the lights on when you are getting out of the car. There are, how...

1-12-1992 | Nowadays, with the advent of SMD (surface mountdesign), it is possible to construct tiny circuits. In the case of crystal oscillators th...

1-12-1992 | The stepper presented here makes use of nine positions of a 12-position rotary swtch. It is, of course, possible to add the omitted steps...

1-12-1992 | The simplest solar-cell supply system consists of three parts: a diode, a solar-cell panel, and a rechargeable battery. The diode prevent...

1-12-1992 | Although there are a number of ICs available that convert frequency to voltage, this can also be done with discrete components as shown...

1-12-1992 | A tester for MIDI connections is a real asset for many constructors. The one presented here is kept fairly simple as shown in the diagram...

1-12-1992 | Timer chip ICM7250 from Maxim enables a very simple timer to be designed. The IC has eight programmable inputs for connectlng to, say, tw...

1-12-1992 | The circuit uses one of the four bilateral switches contained in a CD4066. and is a kind of a stable multivibrator. The main limitations o...

1-12-1992 | The governor described in this article is intended primarily for small 12 V motors that draw a current of not more than 2 A. Many governo...