Description With this circuit we can amplification selectively the high signal of picture frequencies [Video] with result bigger clarity than this. The circuit should be placed between a Video unit and the reception Scart or the plug Video input of television receiver. The designing is simple, it’s based in three only transistor. The first stage of Q1 function as isolator - adapter of input impedance. The second stage round the Q2 in common base connection which the gain is determined by the TR2. The TR1, R6 and C3 determine the frequency response. The third stage round the Q3 works as output buffer and 75-ohm line driver. The TR2 should be regulated in a place where the circuit output voltage, to be 1Vp-p, in 75 ohm load. The circuit functions with 12Volts - 50mA well stabilized. Circuit diagram Part List R1=82ohm R2=5.6Kohm R3-9-11=2.7Kohm R4=330ohm R5=220ohm R6=470ohm R7=270ohm R8=12Kohm R10=2.2Kohm R12=180ohm R13=68ohm C1-4-5=100uF 16V C2=2200uF 16V C3=470pF ceram...