Elektor Team (9504)

1.07.1983 | elektorjuly/august 1983 57 amplified triac drive A well-known shortcoming of vir- tually all electronic components is their sensitivity to t...

1.07.1983 | action flash Very fast acoustic electronic-flash releases as used by professional photographers and in quick-motion film apparatus for actio...

1.07.1983 | 59 temperature indicator 1N414£ 547B The temperature indication of a heat sink on a power transistor in high power circuits can be extremel...

1.07.1983 | i e detector The principle of a lie detector may be considered welf-known: emotional states are not only betrayed by a faster heartbeat and...

1.07.1983 | 61 H.J. Walter N2 4 69 electronic pocket-pinball This highly portable pocket-pinball game may not exactly be a substi- tute for its big brot...

1.07.1983 | 62 simple sawtooth generator Relt 81 P1 250k Sawtooth generators are frequently required in most branches of elec- tronics. We therefore fea...

1.07.1983 | optical voltage indicator This circuit indicates, by means of a flashing LED, when a voltage being monitored or measured falls below a prede...

1.07.1983 | heatsink thermometer This thermometer was designed for measuring the heatsink temperature of a Crescendo power amplifier, but it can, of cou...

1.07.1983 | elektorjuly/august 1983 65 o n/off with a single push button A very useful function expressed in a 1 simple circuit that is suitable for man...

1.07.1983 | L. inexpensive 45 MHz crystal filter A receiver with an intermediate frequency, IF, which is higher than the highest received frequency, fc,...