Find:
About Me
Blogs
- Antique Radio Blog
- Arcane Radio Trivia
- Audio Tweak
- Audioklassiks
- BuildLounge
- Classic Receivers
- Coffman Labs Blog
- Confessions of a Part-Time Audiophile
- EEVBlog
- Engineering Radio
- Glowbugs Times
- Glowbugs Web
- Guitar Fool
- Hack a Day
- HeavyDIY
- High on Solder
- Ilektronx
- MicroSyl
- Nick's Radio Corner
- Old Stock Audio
- Pragmaddux
- Radio Stuff
- Radio Time Traveller
- Richard Sears, Vintage Electronics
- Seventies Stereo
- The Paleotechnologist
- The Signal Path
- Tube Addict
- TubeSound
Friends
Resources
- 6V6
- Active Equalizer
- AM
- amplifier
- Antique
- antique radio
- audiophile
- Bose
- Bose 901
- capacitor
- capacitor replacement
- cost engineering
- Craigslist
- diy
- eBay
- eico
- electronics
- Equalizer
- fried electronics
- GE
- General Electric
- grunow
- grunow 586
- grunow 589
- grunow chassis 5-U
- grunow radio restoration
- ham radio
- hf
- hi-fi
- HP
- Klipsch
- KN0CK
- LCD
- LF-116
- old radio
- oscilloscope
- philco
- photos
- power supply
- project
- projects
- radio
- radio retailing
- rca
- receiver
- repair
- replacement
- restoration
- RTLSDR
- SDR#
- Series 1
- shortwave
- soldering
- Sony
- Speakers
- speaker spotter
- stereo
- stromberg-carlson
- Technology
- teledial
- test equipment
- tube
- Tube Amp
- tube radio
- up-converter
- Upconverter
- vacuum tube
- vintage
- vintage ad
- vintage audio
- vintage radio
- vintage speakers
- vintage stereo
- Westinghouse
- zenith
Categories
Meta
Tag Archives: vd1221
VD-1221 Replacement Substitute Diodes
VD-1221, VD-1212, VD-1220, VD-1222, and many other vintage multi-junction diodes probe to failure, which are used in bias and RF mixer circuits, can be easily replaced by series combinations of 1N4148 diodes for reliability and longevity. Continue reading
Posted in Audio, DIY, Electronics, Vintage
Tagged 1n4148, amplifier, bias, diode, diode substitute, series, Sony, substitute, TA-4650, TA-5650, TA-8650, varactor, varactor diode, VD-1212, VD-1220, vd-1221, VD-1222, vd1221, VFET
8 Comments
RETROVOLTAGE 