H. Bonekamp (119)

| Metering circuits frequently make use of a differential input stage, which nullifies any interference generated in, for instance, the met...

| It is not always realized that, when a short-circuit occurs in a circuit supplied via a Type 78xx regulator, this and similar types of re...

| Here is a simple, fairly accurate and linear, full-wave rectifier for small signals (approx. 10 mV to 3 V) with a frequency between d.c....

| The wideband distribution amplifier is based on a single Type OPA621. This op amp is typified by a very short settling time, a high slow...

| The frequency of the standard Wien bridge oscilator presented is made variable by maktng one of the arms a mono potentiometer. The bridg...

| The very real advantages of an active probe over a passive one are that loading caused by large cable capacitances is prevented and that...

| Water pipes can be descaled withb the aid of a magnetic field or an electric filed. The present descaler uses an electric field, which is...

| An analogue oscilloscope that is used for measuring slow processes has the drawback that the test time per scale division is relatively sh...

| Systems with RAM must always be connected to a power supply otherwise the data in the memory get lost. Any break in the supply can, ther...

| There are frequent occasions in which a circuit needs a low-current supply at a voltage appreciably higher than the 12 V provided by a s...