| 50 VALVE PREAMPLIFIER 1 EE March 1987 Despite their becoming gradu- ally obsolete, valves are still very popular with a good many audio enth...
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| pocket frequency meter 94by R Shankar Ti functions as a buffer, preceding Schmitt trigger Al, which has been dimensioned for a relatively lo...
| 12 13 1 D3 10 216/9131N4148 R17 40p ICI IC2 N1...N4 = IC1 = 4001 N5 = IC2 = 4001 A1,A2 = IC3 = LM358 TIC206D La l L a2 CL.= Nom 78p C10 SI=...
| R25 EE 74 July/August 1986 LE)io cll 180 n -II II 10n 10n (Sat.) ® S1 50mA A2 10n 10n R19 A R21 180 n R2 C11 . 68n R24 C2 481..bwoofer filt...
| up/down clock generator 154 1 R7 Various designs of clock generators have appeared in previous Summer Circuits issues of Elektor Elec- troni...
| PORTABLE MIXER 2 This second part in the series continues with the construction of the first output module, which incorporates tone controls...
| elektor july/august 1985 A bicycle or tricycle should, as everyone knows, be fitted with front and rear lights. The noteworthy aspect of the...
| This novel indicator is ideally suitable for use in a discotheque. It consists of eight equi-distant columns of eight LEDs arranged in a sta...
| for the TRS-80 and other personal computers TRS 80 MI It is no secret to anybody that there is a price war raging in the market for home com...
| to help your guests This circuit should put an end to your guests fumbling for the light switch in the cloakroom. It ensures automatically t...