Elektor Team (9512)

1.07.1983 | voltage monitor The 555 (or 7555) timer IC is a well- known device with a wide range of possible applications. Elektor has already provided...

1.07.1983 | mini compressor This is a circuit for a "feed-forward" dynamic compressor which, unlike a "feedback" system, does not use the output signal...

1.07.1983 | elektor july/august 1983 91 H. Fischer E n RFSH e•lo pno RAS JE.10 Eno 6809 DRAM controller CAS 1,2 E•20 ADDR * Data Read Cycle 0.30 coi...

1.07.1983 | r. acoustic "flag" for the RS232 interface In the course of their work pro- grammers rarely use their sense of hearing. Why not use these in...

1.07.1983 | 93 simpte PA system A very nice power amplifier deliver- ing 10 W into 2 Sl (two 4 S2 loud- speakers in parallel) can be built using the TDA...

1.07.1983 | elektor july/august 1983 94 1~ C. Bajeux 5 V logic tester The full title for the description of this circuit should be "3 state 5 V logic te...

1.07.1983 | 95 microphone amplifier with preset tone control The active parts of the circuit (ampli- fiers Al and A2) shown in figure 1 are contained in...

1.07.1983 | elektor july/august 1983 NI~ current source for photodiodes There are many circuits available today which use modulated light signals to tra...

1.07.1983 | 97 faultfinder for ASCII keyboard To be able to check the connections to an unknown ASCII keyboard, you want to know first of all where the...

1.07.1983 | ~Y3 }Processor fault finder When fault finding in a micro- processor system it is not always possible to work in single-step mode, as the pr...