More about Battery (439)

| Input selection in the battery operated preamplifier published in the January 1997 issue of this magazine is by rotary switch. This does...

| The ignition warning light in a car indicates whether the battery is being charged or not (and indeed whether it is connected properl...

| Testing and faultfinding of audio equipment and low-frequency test instruments is all but impossible without a good signal generator. T...

| To design a battery charger with switching regulators you need quite a few flat batteries and the patience of Job. When you come to c...

| Following the detailed description of the preamplifier in last month's installment, this second and final part of the article deals with t...

| This preamplifier is intended for those audio enthusiasts who are interested in only the best. Its discrete design produces distortion...

| There has always been doubt about the claims that dry alkaline manganese batteries could be revived by charging, especially since manu...

| The battery indicator lamp on the dashboard of cars lights when the car's battery is not being charged. The present circuit has a simila...

| After a battery has been discharged, it is often found that tbe separate cells have been discharged to different values. This is, of cou...

| As described elsewhere in this issue, lithium-ion batteries are among the newest on the market. Because of their low weight, however,...