More about power supplies (359)

1-06-1991 | VARIABLE A.C. POWER SUPPLY Stabilized and regulated d.c. power supplies are readily available in many shapes and sizes. By contrast, a regul...

1-04-1991 | The circuit diagram of the power supply shows that the semiconductor tester has an on-board step-up voltage converter that is powered from...

1-11-1990 | Before dealing with the construction of the PSU, this second and final instalment discusses the operation of the four modes in which the i...

1-10-1990 | Here is an all-purpose d.c. power supply tor symmetrical as well as asymmetrical use, and capable ot supplying high output currents and vo...

1-07-1990 | It has been some time since we published a 200+ Watt power supply like the one described here. Capable of supplying up to 10 A (and more i...

1-07-1990 | A standard voltage regulator Type 7805 is inexpensive and easily available, but its maximum current of 1 A can at times prove a handicap....

1-07-1990 | The LM3915 from National Semicanductor contains virtually everything for making a simple, yet reliable, audio power meter with a bar-type...

1-07-1990 | Most power supplies, particularly switchmode types, are not designed to provide output voltages smaller than a volt or two. lt is often d...

1-07-1990 | In most variable power supplies, the correlation between the setting of the wiper of the relevant potentiometer and the output voltage is...

1-07-1990 | It happens frequently that a circuit powered by a single supply voltage is extended and then needs a second supply voltage of opposite...