One of my hobbies has been electronics since age of 15.

Here are some of my works...

Tank T.V. Game	front back	I made it 12 years ago.
I/O port card for Microcomputer FM-7	front back	.
T.V. frequency converter	picture	.
Clock	picture	parts were so inexpensive that I made it.
Rhythm box	picture	.
F.M. frequency converter	picture	I made PCB too.
L.E.D. Oscilloscope	front inside inside	condensed three layer structure 8 years ago
Streo Pre-amplifier	front back inside	used FET. I made it when I was in high school.
F.M. Synthesizer card for microcomputer FM-7	front back	easy. used very thin lines The more advanced type was exhibited in the Microcomputer Show in Tokyo and Osaka in 1986.
F.M. Synthesizer computer using Z80	front inside display	It sounds attached with keyboard and speaker.
Electrical melody player	picture back	easy made when I was a junior-high student.
T.V. game for 2 people	picture inside	easy I made PCB too.
EP-ROM writer for microcomputer FM-7	picture	It was hard to find all the parts. very easy.
EP-ROM writer (kit)	picture	RS232C interface.
Power amplifier with Surround processor	picture inside	.
Frequency counter	picture back inside	We can see rechargeable battery inside.
Power amplifier using vacuum tubes	inside inside back front	good sound one of my favorites. easy.
Power amplifier using vacuum tubes	picture inside	This one has more power than above.
Floppy disk duplicator	picture back	It could copy any floppy disks (2D). I made it 10 years ago.
T.V. game for 2 people	picture inside	.
Infr remote-controller	picture	kit
Power supplier	picture inside	kit
4-bit microcomputer-clock	picture back inside	We can see outlets. condensed.
Z80 microcomputer	front keyboard back	easy kit.
Stero surround power amplifier	picture surround processor level meters	with level meters, HD64180, LCD

Last Updated 98/04/16
by itanaka