"The Brute" takes form.
Posted: Fri Oct 17, 2008 4:49 pm
Dear All,
At long last the metalwork for "The Brute" has been delivered and the two photos below shows the progress in the last 24 hours.
The blank boards will in time contain the timebases, PWM for the main CRT, cursor generation for the 1" waveform monitor (hidden behind the main CRT) and the drive for the EM84 to display frame burst and audio levels.
At the top-left is the 'transformer farm' which with all the other stuff does make this thing somewhat Ballesteros...(i.e. 'seve). Just below the loudspeaker is the audio board and the +/-300V PSU (EF86, EL91 and EZ81). The completed boards left-to-right are the +/-1400V psu, the low-voltage PSU, the deflection logic (four vertical rates, two horizontal plus interlacing) and the analogue input and burst processing board. The seven EF91s (only six visible) are for the deflection.
There is still a lot do do but given a full-time effort it could be done by the end of this month (two weeks), but I get the feeling that some 'real' work is going to get in the way.
Steve A.
At long last the metalwork for "The Brute" has been delivered and the two photos below shows the progress in the last 24 hours.
The blank boards will in time contain the timebases, PWM for the main CRT, cursor generation for the 1" waveform monitor (hidden behind the main CRT) and the drive for the EM84 to display frame burst and audio levels.
At the top-left is the 'transformer farm' which with all the other stuff does make this thing somewhat Ballesteros...(i.e. 'seve). Just below the loudspeaker is the audio board and the +/-300V PSU (EF86, EL91 and EZ81). The completed boards left-to-right are the +/-1400V psu, the low-voltage PSU, the deflection logic (four vertical rates, two horizontal plus interlacing) and the analogue input and burst processing board. The seven EF91s (only six visible) are for the deflection.
There is still a lot do do but given a full-time effort it could be done by the end of this month (two weeks), but I get the feeling that some 'real' work is going to get in the way.
Steve A.