Gregor Kleine (108)

| If you are working at frequencies of the order of 850 MHz to 4 GHz and find that a frequency multiplier is required, the HMC 187, HMC 188 an...

| A symmetrical ±5 V power supply is often needed for small, battery-operated operational amplifier projects and analogue circuits. An IC that...

| The Philips Semiconductors TDA8551 is a small audio amplifier with an integrated volume control. When operated from +5 V, it delivers a nomi...

| Nowadays, it is no longer necessary to use discrete components to build oscillators. Instead, many manufacturers provide ready-made voltage-...

| Anyone who has to reduce the amplitudes of RF signals in a controlled manner needs an attenuator. Linearly adjustable attenuation networks u...

| If you want to connect a video signal to several destinations, you need a distribution amplifier to match the 75-ohm video cable. A distribu...

| Contact bounce is an age-old problem with all types of pushbutton switches and keypads that are connected to digital components. The measure...

| Transistors are often used for switching power supply voltages. MOSFETs are most often used, since they have low ‘on’ resistances, and they...

| The sound generator shown here uses its built-in loudspeaker as a microphone when it is in the standby state. As soon as it detects a noise...

| Maxim has recently introduced a new integrated current meter IC called the MAX4173. It converts a current measured in the positive supply le...