Elektor Team (9510)

1-07-1976 | A reliable lap doorbell can be built using a few cheap com- ponents, which usually can be found in the junk-box.

1-07-1976 | The simplest V_HF receiver is the su perregenera tlve. Unfortunately, it is also one of the most difficult to get working properly ......

1-07-1976 | The simplest V_HF receiver is the su perregenera tlve. Unfortunately, it is also one of the most difficult to get working properly ......

1-07-1976 | The front-door bell or telephone cannot always be heard all over the house. Extending the bell usually means running wires all over the...

1-07-1976 | Power supplies are always useful, and, in spite of the fact that integrated voltage regulators are now becoming quite readily available...

1-07-1976 | Power supplies are always useful, and, in spite of the fact that integrated voltage regulators are now becoming quite readily available...

1-07-1976 | Power supplies are always useful, and, in spite of the fact that integrated voltage regulators are now becoming quite readily available...

1-07-1976 | One of the major disadvantages of simple video modulators is that the stability of the oscillator is usually insufficient. This leads...

1-07-1976 | As long as the input voltage to this trigger circuit is less than the lower threshold level, TI is cut off; T2 will be saturated thro...

1-07-1976 | As long as the input voltage to this trigger circuit is less than the lower threshold level, TI is cut off; T2 will be saturated thro...