Elektor Team (9497)

1.07.1983 | elektor july/august 1983 14 reproducible delay There are many occasions when a switching delay is required. One way of achieving this is to...

1.07.1983 | 15 stable zener As everybody knows the voltage drop across a zener diode is depen- dent on the current passing through the diode. Therefore,...

1.07.1983 | 16 R. Storn symmetrical voltages from a doorbel) transformer This circuit is of interest not merely because it uses a belt transformer with...

1.07.1983 | 17 LED current source If an LED is used in a circuit, the current for that LED is normally set with a limiting resistor. The LED can then be...

1.07.1983 | elektor july/august 1983 solar tracking system There are some hopes that the sun will become a main source of energy in the 21 st century. B...

1.07.1983 | 19 emergency mains cut-out If the voltage of the mains supply of a computer rises too high, compo- nents on the printed circuit boards can e...

1.07.1983 | 20 simple baud rate generator The generator described is a good- value-for-money alternative to the commercially available types; it uses on...

1.07.1983 | elektor july/august 1983 21 flashing running light Roadworks are usually marked during the hours of darkness by yellow flashing lights. Thes...

1.07.1983 | 22 2650 single step It can be very handy if the micro- processor can be put into single step mode when debugging home made programs. This li...

1.07.1983 | lektor july/august 1983 23 1MHz time base without crystal Clock generators, for instance, those used in microprocessor systems, are normally...