Martin Ossmann (82)

| Gyrator circuits can be used to simulate capacitors and coils. What’s more, they can also be used as impedance converters, as described in t...

| Adding this push-pull converter to the output of a standard bench top power supply gives a DC output up to 350 V DC. The output voltage and...

| Red Pitaya is the first open-source instrumentation platform that can be configured for various measurement tasks. Ready-made apps are avail...

| Red Pitaya is the first open-source instrumentation platform that can be configured for various measurement tasks. Ready-made apps are avail...

| Atmel AVR microcontrollers are very popular, not least because of the free development tools that are available. In this E-Book (Free downlo...

| This article describes how easy it can be to use a current transformer to make precise measurements of alternating currents. We use a wide v...

| To calculate current we normally use a shunt to turn it into a voltage and measure the latter instead. But if we wish to measure the current...

| Time-dependent voltage measurements are easy to take, with just a test probe and an oscilloscope. These days signals from DC up to a few ten...

| Surely not another digital clock? Well this one is simple to build and a bit of a novelty. It strikes every quarter hour and hour, and the s...

| The author’s rechargeable battery collection comprises a large number of cells of various types, ages and states. Surely he cannot be the on...