More about power (1013)

1-05-1992 | The greater part of this month's instalment is devoted to the operation of the microprocessorcontrolled synthesizer used to tune the RF...

1-04-1992 | This second part of the artide was originally intended to deal with the adjustment of the main tuner board only. However, following many...

1-03-1992 | How do you know whether your precious laboratory/workshop power supply unit is still working to specification? How do you measure the para...

1-02-1992 | A reliable, sturdy switch-mode power supply is not the easiest of electronic circuits to design, as many of you may have found out the...

1-12-1991 | In most personal computers, the power supply provides +5 V and ±12 V lines. The positive 12 V line is needed for the disk drives, and the...

1-12-1991 | The power supply for this analogue circuit that affords delays of 330 seconds is taken directly from the mains. The direct voltage at the...

1-12-1991 | Output Q1 of this delay circuit becomes active after the switch-on period has elapsed and remains so until the next cycle is begun. Outp...

1-12-1991 | The emulator enables a Type 2764 EPROM in an existing circuit to be replaced by a static RAM. It is a very compact circuit: together with...

1-12-1991 | The voltage amplifier and current amplifier are housed on separate printed-circuit boards. The current-amplifier board is fitted just abo...

1-12-1991 | When a bicycle speedometer must be rugged, accurate and, above alt novel and a Iittle unusual, the 'high-rech' computerized LeD units fou...