Elektor Team (8188)

| 7-20 — alektor july/august 1981 random number generator A random number generator is very often required when developing and running game...

| an effective scratch and rumble filter Many home-constructed audio amplifiers incorpor- ate scratch and rumble filters, but quite often the...

| digit•al t.uning indicator Although the Japanese manufacturer, OKI, is less well known than some others, they are nevertheless important a...

| 744 — elektor july/august 1981 objektor The aim of this circuit is to detect the presence of a conductive object, provided the object is w...

| high input impedance voltage follower hones, as an It is common knowledge that Field Effect Tran- well sistors (F ETs) feature a very high i...

| lam power levels as well. The IC contains an adjustable voltage reference and an accurate ten-step voltage divider. The input buffer drives...

| The circuit shown in figure 1 meets these demands uately. It is a bridge version of the quite adeq PWM amplifier with an output power self-o...

| simple swinging poster The original "swinging poster" circuit was published in the January 1981 issue of Elekta disco etc. As the circuit is...

| K. Siol time six hour timer S1 therefore enables the operator to select a hours. As soon ass period of from one to six the transistor will s...

| VOX for PA systems An annoying problem with PA systems is their tendency to whistle or "howl" due to feed back phenomena. There are a number...