| This low-power UHF FM transmitter is intended for remote control applications such as garage doors and wireless alarm systems. lt is a si...
All items tagged with Time and technology (303)
| This is a stand-alone application of a stripped-down version of the 80C32 single-board computer. The cost of making a BASIC version of th...
| To enable the 80C32 generate a TV picture, it requires a digital-to-analogue converter (DAC).This DAC must be capable of working at relat...
| 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...
| The charger makes cunning use of the properties of a Type 555 timer. The tnternal window comparator of the lC is set to 4.7 V by zener dio...
| One advantage bipolar opamps have over FET types is that their input noise level is appreciably lower. However, when abipolar opamp is us...
| Nowadays, with the advent of SMD (surface mountdesign), it is possible to construct tiny circuits. In the case of crystal oscillators th...
| 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...
| The simplest solar-cell supply system consists of three parts: a diode, a solar-cell panel, and a rechargeable battery. The diode prevent...
| Although there are a number of ICs available that convert frequency to voltage, this can also be done with discrete components as shown...